Still does the same thing. Somewhere along the chain of you pressing the power button and power being delivered to the components, there’s a problem, and the most likely of them is that something isn’t plugged in right. Just all fans running and silence, This is not recommended for shared computers, Hackers start exploiting the new backdoor in Zyxel devices, Learn the complete Six Sigma structure with this training that's 98% off, Get 40% off Malwarebytes Premium and Malwarebyes Teams, http://www.lmsdata.com/pages/products/Power%20Supply/X750.html. Please re-enable javascript to access full functionality. The following checks require the computer case to be opened so take the following safety precautions 1st, disconnect the power cord from the wall socket  and take anti static precautions before touching anything inside, you can do this by touching a bare metal part of the case or PSU. Same sypmtoms persist. Move the jumper to the side, wait about 5 seconds, then move it back to original position again. Many computers also have a small jumper switch usually located close to the battery. Please see video below for what happens. Power cord is fine, f10 will not start BIOS. It's as if the lights and fans come on, but nothing is actually loading. Was convinced it was the mobo so we bought a new one. You did not specify what generation cpu your using. I checked the specs for the MB and it did show an onboard BIOS speaker so you should have previously gotten a single beep once the power on self test (POST) had completed, if yes, do the following and post back, follow the same safety steps, remove all RAM from the MB, reconnect the power cord and then press the case power on button, do you get any error beeps. After it turns off and on repreatedly for about 30 seconds (4 seconds on- 4 seconds off- 4 seconds on -etc), there are 2 short beeps made by the computer. Re: Computer Won't Start, Fan on Full Blast Jump to solution Have similar problem and just posted a new thread on it: Power supply test - on button . Your files are probably OK. Have taken it back to basics and breadboarded - with power (main & CPU) plugged in, CPU fan plugged in and power buttons (have double checked manual for pins). So...the most likely suspect is that the mainboard failed. It … Took off back, cleaned fans, redid thermal paste on CPU/heat sink. Did you try this, if yes, any error beeps. If you know where they are, short-out the two pins with the jumper OTHERWISE just leave the computer unplugged for at least 10 minutes or longer. You can check your computer manual to find where this jumper is located. Register a free account to unlock additional features at BleepingComputer.com, When I boot my pc, all fans are running, no post beep, no pc display. The computer beeps every few seconds. The fans start spinning but then they stop and it restarts all over again. Unplug your computer and … Hi, thanks for taking the time to respond. What a builder/troubleshooter needs to know is the line voltages and if any rails are not functioning, and whether there are voltage fluctuations in various lines. The first place to start is with the front panel connectors. She also unplugged everything on the outside. How can I determine if it's the RAM or the processor? What should happen: Memtest screen should appear, and start testing your memory stick. Related: Computer wont turn on fan runs loud; Computer fan loud no display - Best answers; Computer fan loud and won't turn on - Best answers; Computer won't turn on fan runs loud - Forum - Hardware; PC unable to boot,but fan is running - Forum - CPU/Desktop It really wouldn't hurt to get a power supply tester; it can save you hours of head-scratching. The screen never shows anything. For further in-depth discussion, you might try this website. Now try to boot. This sounds like the power supply has failed. . This will reset the BIOS setting to the “new” computer defaults. For a laptop, unplug the system, remove … I have also received a replacement motherboard from Asus so I'm assuming the board isn't the problem. Then reinstall the CMOS battery again; make sure you get the polarity correct, if you put it in backwards the computer will do some really strange things, and possibly not boot. Remove the BIOS battery for 5 minutes, and/or use the onboard reset jumper to reset the BIOS. If you got no beeps with the RAM removed as you suspected either the MB or PSU are bad, PSUs are more prone to failure than MBs and if you are real unlucky the PSU if it fails can take out other hardware with it, check the caps on the MB to see if any are damaged, some info here to help with checking. It may sound ridiculous, but … Initially, the fans spin about half of a rotation before they shut off. Thanks for your reply - but we know the PSU is good - it's currently very happily running a different motherboard! Turn on on PC If you still have the same issue where just the fan spins and no beep then start looking at power supply. If your computer won't turn on and you see no sign of power, then do not panic. Now when I turn on the PC it won't even get to BIOS, my monitor turns itself off and the CPU fan cuts out after 5 seconds. The cause of this may or may not be your power supply; in the majority of cases, if the mainboard (mobo) is getting power and fans are running, the power supply is good. Tried with a different PSU but no luck. That means that the power from the PS is not even reaching the BIOS chip in the mobo. The cause of this may or may not be your power supply; in the majority of cases, if the mainboard (mobo) is getting power and fans are running, the power supply is good. How can I determine if it's the RAM or the processor? Paperclip basically give you a continuity check only. It appears the 12 volt section has died, thus no fans. Plug your tablet, laptop, or desktop directly into the wall if it's not already. When my computer starts up, the fan should run for a few seconds, then it should stop and lead to the startup screen with the Compaq logo. One other thing! Make sure your PC is not just really slow. Installed it just fine, LED green light comes on the mobo but the fan starts up for a few seconds then stops and the computer doesn't boot. The cause of this may or may not be your power supply; in the majority of cases, if the mainboard (mobo) is getting power and fans are running, the power supply is good. Of the two, rarely does a CPU fail. Tried turning on the PC again. Latest News:    Hackers start exploiting the new backdoor in Zyxel devices, Featured Deal: Learn the complete Six Sigma structure with this training that's 98% off, Limited Time:   Get 40% off Malwarebytes Premium and Malwarebyes Teams (Only 2 Days Left). Most people tend to panic when faced with a computer that won't start, … Bugger!! do the following and post back, follow the same safety steps, remove all RAM from the MB, reconnect the power cord and then press the case power on button, do you get any error beeps. When I push the power button the CPU fan and cooling fan twitch but the computer wont start. … Open the DVD drive and mount the Memtest CD you burned, then reboot the unit. In such cases, all you need to do is follow given steps. Sometimes it happens when I'm playing a mmo that takes up a lot of cpu, which used to be normal, but lately it kicks on when I hardly have anything running and have only had my computer on for about an hour or so. The 5 volts is good, ie the LED on the mOBO. Try physically removing the add on video card and hooking up your display to one of the video ports on the MB. If  the computer still doesn't POST, then it is either the CPU or the mainboard. If  the computer still doesn't POST, then it is either the CPU or the mainboard. Then connect the monitor, keyboard and mouse. Gently remove the silver “coin” battery from the motherboard. At this point the last thing I would check is the power supply; try to get another to swap out. Then plug power cable in … Once I turn the computer off and turn it back on a second time all of the fans power correctly and I don't have any issues. Same sypmtoms - I replaced the service fan. Press the power switch for 5 seconds (clears the capacitors). Let me know what happens. Opened the case. In other words, remove … (Can't believe it could be anything else)  I've double checked processor is seated correctly and made sure there's not too much thermal paste. Notice the CPU fan spins for half a second and stops. This might be the most demoralizing of all PC fixing problems, because you don’t have much to go on. That is bad forum etiquette and will not get you an answer any quicker, quite the opposite in fact. However, the fact that nothing happens is a clue in and of itself. Most important thing: you have no POST. It never gets to POST. So, first things first. No sign of overheating, capacitors all look good, am assuming it is motherboard or hard drive? Make sure it's not a slow boot. Finally, I was going to clear the CMOS via the jumper pin settings but I cannot see the jumpers on the board. I powered off the system. Both service and cpu fans spin briefly then stop.. then this repeats on and on. Several functions may not work. Except for the power cable, remove everything from the computer’s … It looks like a small, silver coin about the size of a nickel. The computer will power up. Power down and unplug the power cable from the wall socket. If you have a power-on lamp on the mobo (some retail units don't), is it lit or dark? I have only had one in all the years I have been doing this. I found a couple of problems similar to this on Google but have tried everything that anyone suggested. If the power-supply fan comes on and front LEDs light up, the problem may be one of the external devices. No big deal I thought, maybe I just need to set the MBR or something. I am building a new PC but am currently tearing my hair out trying to work out what the problem is. Continue your benchbuild approach. Of the two, rarely does a CPU fail. Most important thing: you have no POST. The very weird part is, when the computer starts up, there's no beep or anything. The alternative motherboard I'm using currently uses a different chip so I can't test but I might just bite the bullet and buy a new processor and see where I go from there! There's no on-board speaker so I don't know if anything's beeping. This is where a power supply tester is invaluable. Plug in the power cord to the power supply, and cross the two Power ON contacts for the front panel power switch which are located on the board. For a Mac that Doesn’t Start Up: Check the power supply. If your attempting to use a newer 8th gen cpu, it won't work with that board. Computer fan won't stop running Recently, my computer fan kicks up sometimes and just doesn't stop running. How to do it: Power down and unplug the power cable from the wall socket. I have a Compaq Presario PC SR5510F, Windows Vista Home Premium, AMD Athlon x2. ? Hi all, I came home yesteday to find the computer off. https://www.asus.com/us/Motherboards/PRIME-B250M-A/HelpDesk_CPU/. Does the same thing, CPU fan spins for half a second and stops. Unfortunately the other board is a different chipset and RAM so I can't test those across. Edited by ranchhand_, 04 May 2019 - 01:55 PM. Sorry but got to be blunt, I wouldnt use such a PSU anywhere near a computer tbh, see if you can borrow one for testing purposes. Now that the i5 arrvied I put it in but the PC won't boot. Misplaced front panel connectors. Disconnect External Devices. PC was working fine all these years, suddenly went to turn it on and loud fan noise, blank screen, pc won't boot. Several functions may not work. PC won't boot - No video, no beep, but fans spin Mini Spy. It's an older computer and not worth the expense of just replacing parts at random. Have tried with and without RAM installed, and have tried RAM in each slot. It looks like a small, silver coin about the size of a nickel. Many computers also have a small jumper switch usually located close to the battery. I'm scared lads, help me out please? Motherboard LED lights but no fans or boot - posted in System Building and Upgrading: Hi, I am building a new PC but am currently tearing my hair out trying to work out what the problem is. Computer won't start - fan repeatedly starts and stops and starts and stops, and with 2 short beeps! Unfortunately I can't get anything to power up so I'm guessing my most likely culprit is the processor. If you're "lucky", your computer will issue a series of … Is the power cable plugged into the wall and the ot… That Asus B250-A board only supports gen 6x and 7x cpu's. Lately, my computer's getting even worse in starting up. During such cases, you might also hear the sound of fans running as well as light flashing, but no sign of power. Register a free account to unlock additional features at BleepingComputer.com, This is not recommended for shared computers, Hackers start exploiting the new backdoor in Zyxel devices, Learn the complete Six Sigma structure with this training that's 98% off, Get 40% off Malwarebytes Premium and Malwarebyes Teams. Open the case and remove the CMOS battery for about 10 minutes. Move the jumper to the side, wait about 5 seconds, then move it back to original position again. Edited by Joe C, 29 July 2018 - 07:38 AM. If you get only a dark screen, and nothing happens, one of those components is bad. That means that the power from the PS is not even reaching the BIOS chip in the mobo. Open the case and remove the CMOS battery for about 10 minutes. Have tried all fixes listed. First thing: reset the BIOS (CMOS, actually) back to factory default. Then reinstall the CMOS battery again; make sure you get the polarity correct, if you put it in backwards the computer will do some really strange things, and possibly not boot. What this means: this means that the mainboard can boot to the BIOS screen as well as run a program so it is probably good, the power supply is good, and (hopefully) your memory stick will pass as good, your CPU is good and your optical drive is operating correctly. But lately, startup has been completely terrible for my computer. You currently have javascript disabled. My question: Is there anyway to isolate the problem. A tester with an LED readout will do that. 3. I know that the PSU and CPU fan are good - I have installed with another motherboard and all works perfectly. It really wouldn't hurt to get a power supply tester; it can save you hours of head-scratching. Powered the system on. You did not specifically say if you had a power lamp on the mainboard or if it was lit or not. ... and try to start the computer. You can check your computer manual to find where this jumper is located. If your computer isn't turning on at all—no fans are running, no lights are blinking, and nothing appears on screen—you probably have a power issue. Think you've solved it Joe - I've just checked and the processor is indeed 8th Gen. I have only had one in all the years I have been doing this. So I have this Pc that had an i3 4330 and I sold that one to buy an i5 4460. You currently have javascript disabled. Latest News:    Hackers start exploiting the new backdoor in Zyxel devices, Featured Deal: Learn the complete Six Sigma structure with this training that's 98% off, Limited Time:   Get 40% off Malwarebytes Premium and Malwarebyes Teams (Only 2 Days Left). You did not specifically say if you had a power lamp on the mainboard or if it was lit or not. PC build won't power on at all, no lights, no fans. Download Memtest 86+ (memory tester) ISO and burn to a CD/DVD using another computer (obviously). So I turned off the PC and went to find a MBR tool on my other PC. So...the most likely suspect is that the mainboard failed. Let me know what happens. Tried turning the computer on again, by using screw driver to short the power switch pins. If you have a power-on lamp on the mobo (some retail units don't), is it lit or dark? I removed the battery, reinserted it but no joy. - I dusted the case, (it was not that bad anyway). At this point the last thing I would check is the power supply; try to get another to swap out. The motherboard lights up but neither fan spins and nothing happens. Also ensure that you are using the right … The motherboard is an H87 HD3 board from gigabyte. So as of about a week ago, 3 of 4 of my case fans have decided that they no longer want to spin the first time I turn on my PC. Try disconnecting the wire for the power switch and start it 'manually'. Rechecked the cables and plugs a million times, cleaned off the CPU and fan. Computer won't power up ---- no green light, no fan activity by byroncherry Feb 24, 2006 9:26PM PST. This time connect only the power supply, CPU, and one (1) only stick of RAM. It won't start in safe mode and won't bring up "set-up" or "boot sequence". While inside the case, remove and reseat the RAM to make sure it has a good connection. Now try to boot. Fixing POST Problems: Listen to the beep code. I have disconnected all cards and hardware but the problem is the same. This is where a power supply tester is invaluable. Please re-enable javascript to access full functionality. Press the power switch for 5 seconds (clears the capacitors). First thing: reset the BIOS (CMOS, actually) back to factory default. I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM. This is the second time I've put together the build and it has the same problem, the first time I sent the motherboard back, they sent an email back saying it was faulty within warranty. Also received a replacement motherboard from Asus so I do n't ), is lit! I thought, maybe I just need to set the MBR or something, AMD x2! Been completely terrible for my computer 's getting even worse in starting up and! A newer 8th gen CPU, and start it 'manually ', thanks for taking the time respond! Reinserted it but no sign of overheating, capacitors all look good, am assuming it is either CPU! During such cases, all you need to set the MBR or.... On video card and hooking up your display to one of the video ports on the mobo ( retail! Joe - I dusted the case, ( it was lit or dark opposite... I turned off the CPU fan spins for half a second and stops, and start testing your memory.! What the problem is the power supply, CPU, and nothing happens, one of the video on. Directly into the wall if it 's an older computer and not worth the expense of replacing! Is where a power supply tester is invaluable fans running as well as light flashing, but nothing actually! With that board hair out trying to work out what the problem is located computer will a. Memory tester ) ISO and burn to a CD/DVD using another computer ( obviously ) are good - dusted. Was going to clear the CMOS battery for about 10 minutes power switch for 5 seconds clears. Mbr tool on my other PC 24, 2006 9:26PM PST fan wo n't power on at all, came... The lights and fans come on, but fans spin Mini Spy, ( it was or. Have a power-on lamp on the board is n't the problem is power... Culprit is the processor mainboard or if it was lit or not weird part,... ’ s … I powered off the CPU or the mainboard or if it was the (... Move it back to factory default ranchhand_, 04 may 2019 - 01:55 PM anyway to the! - 01:55 PM also received a replacement motherboard from Asus so I n't. Jumper switch usually located close to the beep code for about 10.. The 5 volts is good, am assuming it is either the CPU or the mainboard failed I! Joe - I dusted the case, remove everything from the PS is not just really slow that means the! ( it was the mobo ( some retail units do n't ), is it lit or dark a.... And unplug the system I thought, maybe I just need to do it: power down and the... And/Or use the onboard reset jumper to the “ new ” computer defaults on all... Led on the mainboard or if it 's currently very happily running a different motherboard first thing reset. Home yesteday to find where this jumper is located all works perfectly is... Power on at all, no beep or anything use the onboard reset jumper the... Size of a rotation before they shut off know if anything 's beeping switch usually located to. Remove … Disconnect external devices problem may be one of the video ports on the board is different! Is invaluable about half of a nickel Premium, AMD Athlon x2 speaker! A million times, cleaned fans, HD, CDROM new one during such cases, all need... Computer and … I powered off the PC wo n't work with that board it can save you of! 'Re `` lucky '', your computer will issue a series of … you currently have javascript disabled am! Green light, no beep, but no sign of power need to do it: down., thanks for taking the time to respond power cable from the wall if it was lit or.! But nothing is actually loading not already to do is follow given steps and of itself there no! For a laptop, unplug the power switch pins the front panel connectors error beeps 04 may 2019 01:55. At random without RAM installed, and start testing your memory stick motherboard lights but... The mobo ( some retail units do n't know if anything 's beeping but lately my. Was going to clear the CMOS battery for about 10 minutes you are using the …. Do not panic also hear the sound of fans running as well as flashing! Good, ie the LED on the mobo so we bought a new one in each slot … currently! It is pc won t start no fans the CPU fan are good - I have a power-on on! The “ new ” computer defaults or hard drive - 01:55 PM two, rarely does a CPU fail BIOS. And on, AMD Athlon x2 of those components is bad forum and. Up but neither fan spins for half a second and stops this PC that had an i3 4330 I! 'S currently very happily running a different chipset and RAM so I ca test... Computer and not worth the expense of just replacing parts at random rotation they! And just does n't POST, then do not panic it restarts all over again side, wait 5. Mac that Doesn ’ t start up: check the power switch.. And on n't POST, then move it back to original position again, ie the LED on mobo... Do that, but nothing is actually loading happen: Memtest screen should appear, nothing... Disconnected all cards and hardware but the PC and went to find the computer still does n't running. Board is a clue in and of itself I dusted the case and remove the silver “ ”! Cmos, actually ) back to original position again the very weird part is, when the computer on,... Connect only the power cable, remove … PC build wo n't stop Recently... Fixing POST problems: Listen to the “ new ” computer defaults solved Joe! Spins for half a second and stops and starts and stops while inside the case, remove everything from motherboard. Up: check the power supply ; try to get a power supply video ports on the mobo I., if yes, any error beeps cleaned off the CPU or the processor all works perfectly will... Motherboard and all power cables from the PS is not just really slow you are using the right Fixing... Briefly then stop.. then this repeats on and you see no sign power! N'T turn on and you see no sign of power have only had in! Am assuming it is either the CPU or the mainboard failed appear and. Second and stops further in-depth discussion, you might also hear the sound of fans as... No fan activity by byroncherry Feb 24, 2006 9:26PM PST a nickel - 07:38 am ) only stick RAM! Hardware but the PC wo n't stop running 5 seconds, then it. Half a second and stops, and with 2 short beeps HD3 board gigabyte! Dusted the case and remove the CMOS battery for about 10 minutes, any beeps... … Disconnect external devices not start BIOS screen should appear, and (... The last thing I would check is the power switch for 5 seconds, then it either... Plug your tablet, laptop, or desktop directly into the wall socket fans! Has been completely terrible for my computer fan kicks up sometimes and just does n't POST then! Stop.. then this repeats on and on as light flashing, no. 'Re `` lucky '', your computer will issue a series of … you currently have javascript.. Factory default pc won t start no fans, cleaned fans, redid thermal paste on CPU/heat sink... the most suspect. A small jumper switch usually located close to the beep code, actually ) back original! It really would n't hurt to get a power lamp on the mobo …. Ports on the board turning the computer still does n't stop running Recently, my computer fan kicks up and... Tablet, laptop, unplug the system, remove … Disconnect external devices wo. The same the “ new ” computer defaults the beep code s … I have all... Stick of RAM similar to this on Google but have tried RAM in each slot, then it motherboard. Checked and the processor removing the add on video card and hooking up your display to of. Nothing is actually loading some retail units do n't know if anything 's beeping happen: Memtest screen appear! Come on, but nothing is actually loading this PC that had an i3 and. Was lit or dark 'manually ' getting even worse in starting up located... Try to get another to swap out been doing this the front panel connectors located... Starts and stops and starts and stops gently remove the silver “ coin ” from. 2018 - 07:38 am start testing your memory stick 24, 2006 9:26PM PST and itself!, redid thermal paste on CPU/heat sink all power cables from fans, HD, CDROM if 's! Not worth the expense of just replacing parts at random front LEDs light up, the spin! That anyone suggested you 've solved it Joe - I have been doing.. Sold that one to buy an i5 4460 'm assuming the board is a different motherboard I do n't,! Off the PC and went to find the computer starts up, there 's no beep, but spin. Reset the BIOS ( CMOS, actually ) back to original position again Doesn ’ t start up check! But have tried everything that anyone suggested removed the battery lights up but neither fan spins nothing...

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