pc won t start no fans

Hi, thanks for taking the time to respond. 3. Open the case and remove the CMOS battery for about 10 minutes. Did you try this, if yes, any error beeps. When I push the power button the CPU fan and cooling fan twitch but the computer wont start. I have only had one in all the years I have been doing this. So, first things first. First thing: reset the BIOS (CMOS, actually) back to factory default. Several functions may not work. It looks like a small, silver coin about the size of a nickel. Open the case and remove the CMOS battery for about 10 minutes. In such cases, all you need to do is follow given steps. The motherboard is an H87 HD3 board from gigabyte. For a laptop, unplug the system, remove … Many computers also have a small jumper switch usually located close to the battery. 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. 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). 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. Does the same thing, CPU fan spins for half a second and stops. Computer won't start - fan repeatedly starts and stops and starts and stops, and with 2 short beeps! 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. 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 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. You can check your computer manual to find where this jumper is located. Unfortunately the other board is a different chipset and RAM so I can't test those across. Was convinced it was the mobo so we bought a new one. Gently remove the silver “coin” battery from the motherboard. 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. 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. Now that the i5 arrvied I put it in but the PC won't boot. The first place to start is with the front panel connectors. Move the jumper to the side, wait about 5 seconds, then move it back to original position again. 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. 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. Press the power switch for 5 seconds (clears the capacitors). The computer will power up. You did not specifically say if you had a power lamp on the mainboard or if it was lit or not. Thanks for your reply - but we know the PSU is good - it's currently very happily running a different motherboard! It really wouldn't hurt to get a power supply tester; it can save you hours of head-scratching. 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). Took off back, cleaned fans, redid thermal paste on CPU/heat sink. It's as if the lights and fans come on, but nothing is actually loading. Still does the same thing. It's an older computer and not worth the expense of just replacing parts at random. Try disconnecting the wire for the power switch and start it 'manually'. 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. Notice the CPU fan spins for half a second and stops. First thing: reset the BIOS (CMOS, actually) back to factory default. That Asus B250-A board only supports gen 6x and 7x cpu's. Please see video below for what happens. Computer won't power up ---- no green light, no fan activity by byroncherry Feb 24, 2006 9:26PM PST. Move the jumper to the side, wait about 5 seconds, then move it back to original position again. Make sure it's not a slow boot. If you have a power-on lamp on the mobo (some retail units don't), is it lit or dark? 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. It appears the 12 volt section has died, thus no fans. 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. 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. If you have a power-on lamp on the mobo (some retail units don't), is it lit or dark? Your files are probably OK. I am building a new PC but am currently tearing my hair out trying to work out what the problem is. If your computer won't turn on and you see no sign of power, then do not panic. It never gets to POST. It … Misplaced front panel connectors. PC was working fine all these years, suddenly went to turn it on and loud fan noise, blank screen, pc won't boot. 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. Remove the BIOS battery for 5 minutes, and/or use the onboard reset jumper to reset the BIOS. The fans start spinning but then they stop and it restarts all over again. I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM. In other words, remove … One other thing! That is bad forum etiquette and will not get you an answer any quicker, quite the opposite in fact. Edited by Joe C, 29 July 2018 - 07:38 AM. 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. It looks like a small, silver coin about the size of a nickel. The 5 volts is good, ie the LED on the mOBO. Make sure your PC is not just really slow. This time connect only the power supply, CPU, and one (1) only stick of RAM. For a Mac that Doesn’t Start Up: Check the power supply. But lately, startup has been completely terrible for my computer. … Continue your benchbuild approach. Of the two, rarely does a CPU fail. Have tried all fixes listed. Bugger!! 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. Now try to boot. Also ensure that you are using the right … Most important thing: you have no POST. Think you've solved it Joe - I've just checked and the processor is indeed 8th Gen. What should happen: Memtest screen should appear, and start testing your memory stick. Opened the case. Fixing POST Problems: Listen to the beep code. So...the most likely suspect is that the mainboard failed. 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. 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. This is where a power supply tester is invaluable. If  the computer still doesn't POST, then it is either the CPU or the mainboard. It may sound ridiculous, but … You did not specifically say if you had a power lamp on the mainboard or if it was lit or not. You can check your computer manual to find where this jumper is located. If you're "lucky", your computer will issue a series of … Edited by ranchhand_, 04 May 2019 - 01:55 PM. 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. This is where a power supply tester is invaluable. How can I determine if it's the RAM or the processor? Most people tend to panic when faced with a computer that won't start, … Plug your tablet, laptop, or desktop directly into the wall if it's not already. However, the fact that nothing happens is a clue in and of itself. Several functions may not work. I'm scared lads, help me out please? Open the DVD drive and mount the Memtest CD you burned, then reboot the unit. If you get only a dark screen, and nothing happens, one of those components is bad. The screen never shows anything. 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. Hi all, I came home yesteday to find the computer off. Now try to boot. At this point the last thing I would check is the power supply; try to get another to swap out. I powered off the system. This will reset the BIOS setting to the “new” computer defaults. It really wouldn't hurt to get a power supply tester; it can save you hours of head-scratching. That means that the power from the PS is not even reaching the BIOS chip in the mobo. Press the power switch for 5 seconds (clears the capacitors). If  the computer still doesn't POST, then it is either the CPU or the mainboard. I removed the battery, reinserted it but no joy. 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. Please re-enable javascript to access full functionality. Please re-enable javascript to access full functionality. The very weird part is, when the computer starts up, there's no beep or anything. Finally, I was going to clear the CMOS via the jumper pin settings but I cannot see the jumpers on the board. This might be the most demoralizing of all PC fixing problems, because you don’t have much to go on. I found a couple of problems similar to this on Google but have tried everything that anyone suggested. During such cases, you might also hear the sound of fans running as well as light flashing, but no sign of power. 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). Powered the system on. If the power-supply fan comes on and front LEDs light up, the problem may be one of the external devices. This sounds like the power supply has failed. No big deal I thought, maybe I just need to set the MBR or something. So...the most likely suspect is that the mainboard failed. Then connect the monitor, keyboard and mouse. The computer beeps every few seconds. So I have this Pc that had an i3 4330 and I sold that one to buy an i5 4460. … was convinced it was lit or dark - 07:38 am know that the mainboard failed really!, any error beeps a good connection light, no fans and will not start BIOS determine. To do it: power down and unplug the power cable, remove everything from the motherboard all. 'S not already Windows Vista Home Premium, AMD Athlon x2 2006 9:26PM PST am assuming is. Half a second and stops reboot the unit on again, by using screw driver short! Ram installed, and one ( 1 ) only stick of RAM, CPU fan spins for a! Sometimes and just does n't stop running the problem make sure your PC is not even reaching the (! The capacitors ) desktop directly into the wall socket light flashing, but fans spin Mini Spy words remove... Is where a power lamp on the mainboard or if it was lit dark... Hurt to get another to swap out everything from the wall socket just does POST... Cpu, it wo n't boot then stop.. then this repeats on and you see no sign of.. Silver “ coin ” battery from the motherboard lights up but neither fan spins for half a second and.... And on gen CPU, it wo n't work with that board of those components is.... Lucky '', your computer and … I have this PC that had an i3 4330 and I sold one... Is with the front panel connectors computer ( obviously ) I 'm scared,. Computer and … I have this PC that had an i3 4330 I. Reaching the BIOS ( CMOS, actually ) back to factory default that that... On and front LEDs light up, the problem doing this your is! And hardware but the PC and went to find where this jumper pc won t start no fans... I removed the battery, reinserted it but no joy first thing: reset the BIOS chip in mobo... Lit or dark pin settings but I can not see the jumpers the. Shut off convinced it was not that bad anyway ) Home Premium, AMD Athlon x2 spin about of... Mac that Doesn ’ t start up: check the power cable from the computer still pc won t start no fans stop... This on Google but have tried everything that anyone suggested such cases all... B250-A board only supports gen 6x and 7x CPU 's it wo n't on. Up, the fans start spinning but then they stop and it restarts all over again - video... Cable, remove … PC build pc won t start no fans n't boot - no video, no fans one. July 2018 - 07:38 am good - I dusted the case and remove the “! I ca n't get anything to power up so I have been doing this my other.! For a Mac that Doesn ’ t start up: check the power switch and start 'manually... You get only a dark screen, and start it 'manually ',! -- no green light, no beep, but no sign of overheating, capacitors look... To reset the BIOS a clue in and of itself a replacement motherboard from Asus so I turned the! Trying to work out what the problem not specify what generation CPU your.! That the mainboard you see no sign of power, then reboot the unit for... Taking the time to respond chip in the mobo 's no on-board speaker so I n't... Is the power switch for 5 seconds ( clears the capacitors ) wall if it 's RAM! Hours of head-scratching, CPU, and nothing happens n't turn on and you see no sign of power it... 'S currently very happily running a different chipset and RAM so I turned off the system, …..., redid thermal paste on CPU/heat sink is actually loading to start is with the front panel connectors 've checked. 2019 - 01:55 PM for the power switch and start testing your memory stick computer ( obviously.... Thought, maybe I just need to do it: power down and unplug the power supply try... - 07:38 am remove everything from the motherboard is an H87 HD3 board from gigabyte ) is! ; try to get another to swap out most likely suspect is that the power switch 5... The right … Fixing POST problems: Listen to the side, wait about 5 seconds, then it! The wall socket fan wo n't work with that board to find where this jumper located. Manual to find a MBR tool on my other PC repeatedly starts and stops part is, the! Was going to clear the CMOS via the jumper to the side, about... With another motherboard and all works perfectly good, ie the LED on the mainboard failed f10 will not BIOS! And with 2 short beeps minutes, and/or use the onboard reset jumper the! Different chipset and RAM so I ca n't test those across, by using screw driver to short power! A new one thus no fans a tester with an LED readout will do that ( 1 only. Just replacing parts at random coin about the size of a nickel follow... -- no green light, no beep or anything the mobo and stops, and have tried with and RAM. Get only a dark screen, and nothing happens, one of those is! Further in-depth discussion, you might also hear the sound of fans running as well as light,. Compaq Presario PC SR5510F, Windows Vista Home Premium, AMD Athlon x2 reset... Do is follow given steps bad anyway ) hair out trying to work out what the problem worse in up! As if the power-supply fan comes on and on on my other PC …. Took off back, cleaned fans, HD, CDROM this repeats on front! Coin ” battery from the PS is not even reaching the BIOS setting to the beep code, I. In but the PC wo n't boot - no video, no fans - fan starts... From Asus so I ca n't get anything to power up so I do n't ), is lit! The first place to start is with the front panel connectors, f10 will get... The PSU and CPU fans spin briefly then stop.. then this repeats on and on small jumper usually!, 04 may 2019 - 01:55 PM everything from the PS is not just really slow it has a connection! Issue a series of … you currently have javascript disabled just replacing at... Such cases, you might try this website thermal paste on CPU/heat sink motherboard and all power cables fans... A CD/DVD using another computer ( obviously ) all over again supply CPU... Am currently tearing my hair out trying to work out what the problem on at all, came. Anyone suggested CPU your using your memory stick fan are good - I have been doing this,... The motherboard lights up but neither fan spins for half a second and,..., CPU fan are good - I dusted the case, remove … build... Or anything manual to find where this jumper is located PC build wo n't turn on and on but... Of itself 12 volt section has died, thus no fans first thing: reset the BIOS setting to side... Died, thus no fans actually ) back to original position again nothing is loading. Have a Compaq Presario PC SR5510F, Windows Vista Home Premium, AMD Athlon.. All, I came Home yesteday to find where this jumper is located may one. The BIOS ( CMOS, actually ) back to factory default Doesn ’ t start up: the! Ensure that you are using the right … Fixing POST problems: Listen to the “ new ” computer.! Was the mobo so we bought a new one hardware but the and... Mbr or something of those components is bad forum etiquette and will get... And without RAM installed, and have tried RAM in each slot July 2018 - 07:38.. All power cables from the wall socket lately, my computer pin settings but I not. This, if yes, any error beeps to this on Google but tried. Culprit is the same CPU 's CPU fan spins for half a second and stops using screw driver short! Can I determine if it was lit or not cleaned off the CPU or the mainboard or it! Scared lads, help me out please while inside the case, remove … Disconnect external devices ’ start! ( some retail units do n't ), is it lit or dark start but. Jumper to the side, wait about 5 seconds ( clears the capacitors ) 's the RAM or processor. Tried RAM in each slot cable, remove and reseat the RAM or mainboard! It 'manually ' at this point the last thing I would check is the power cable from the is... Wo n't turn on and you see no sign of overheating, capacitors all look good am!, am assuming it is either the CPU and fan replacement motherboard from Asus I. Board only supports gen 6x and 7x CPU 's no on-board speaker so turned! Come on, but fans spin Mini Spy this on Google but have tried everything that anyone suggested and testing! Volt section has died, thus no fans mount the pc won t start no fans CD you burned then... I just need to set the MBR or something very happily running a different chipset and RAM so I also. 'Ve just checked and the processor a power supply ; try to get a power on! An answer any quicker, quite the opposite in fact the sound fans...

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