pc won t start no fans

Computer fan won't stop running Recently, my computer fan kicks up sometimes and just doesn't stop running. Try physically removing the add on video card and hooking up your display to one of the video ports on the MB. 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. For further in-depth discussion, you might try this website. Make sure it's not a slow boot. This time connect only the power supply, CPU, and one (1) only stick of RAM. During such cases, you might also hear the sound of fans running as well as light flashing, but no sign of power. I removed the battery, reinserted it but no joy. It won't start in safe mode and won't bring up "set-up" or "boot sequence". Now try to boot. Tried turning the computer on again, by using screw driver to short the power switch pins. Your files are probably OK. Also ensure that you are using the right … So, first things first. 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. Make sure your PC is not just really slow. It really wouldn't hurt to get a power supply tester; it can save you hours of head-scratching. You can check your computer manual to find where this jumper is located. Move the jumper to the side, wait about 5 seconds, then move it back to original position again. Bugger!! At this point the last thing I would check is the power supply; try to get another to swap out. This is where a power supply tester is invaluable. 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. However, the fact that nothing happens is a clue in and of itself. Except for the power cable, remove everything from the computer’s … Move the jumper to the side, wait about 5 seconds, then move it back to original position again. 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 get only a dark screen, and nothing happens, one of those components is bad. … It never gets to POST. The motherboard lights up but neither fan spins and nothing happens. So...the most likely suspect is that the mainboard failed. If  the computer still doesn't POST, then it is either the CPU or the mainboard. Rechecked the cables and plugs a million times, cleaned off the CPU and fan. Notice the CPU fan spins for half a second and stops. It looks like a small, silver coin about the size of a nickel. ? If you have a power-on lamp on the mobo (some retail units don't), is it lit or dark? Was convinced it was the mobo so we bought a new one. So I turned off the PC and went to find a MBR tool on my other PC. This might be the most demoralizing of all PC fixing problems, because you don’t have much to go on. But lately, startup has been completely terrible for my computer. ... and try to start the computer. I am building a new PC but am currently tearing my hair out trying to work out what the problem is. Then connect the monitor, keyboard and mouse. Please re-enable javascript to access full functionality. First thing: reset the BIOS (CMOS, actually) back to factory default. Opened the case. PC won't boot - No video, no beep, but fans spin Mini Spy. This will reset the BIOS setting to the “new” computer defaults. Still does the same thing. If you have a power-on lamp on the mobo (some retail units don't), is it lit or dark? She also unplugged everything on the outside. Did you try this, if yes, any error beeps. Open the case and remove the CMOS battery for about 10 minutes. This is where a power supply tester is invaluable. Of the two, rarely does a CPU fail. It appears the 12 volt section has died, thus no fans. It's an older computer and not worth the expense of just replacing parts at random. Finally, I was going to clear the CMOS via the jumper pin settings but I cannot see the jumpers on the board. 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. Continue your benchbuild approach. If your computer won't turn on and you see no sign of power, then do not panic. 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. Let me know what happens. I powered off the system. The motherboard is an H87 HD3 board from gigabyte. It's as if the lights and fans come on, but nothing is actually loading. Computer won't power up ---- no green light, no fan activity by byroncherry Feb 24, 2006 9:26PM PST. Many computers also have a small jumper switch usually located close to the battery. I know that the PSU and CPU fan are good - I have installed with another motherboard and all works perfectly. 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. If you're "lucky", your computer will issue a series of … Both service and cpu fans spin briefly then stop.. then this repeats on and on. Lately, my computer's getting even worse in starting up. PC was working fine all these years, suddenly went to turn it on and loud fan noise, blank screen, pc won't boot. It really wouldn't hurt to get a power supply tester; it can save you hours of head-scratching. 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. Of the two, rarely does a CPU fail. I have only had one in all the years I have been doing this. You currently have javascript disabled. 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. Press the power switch for 5 seconds (clears the capacitors). Try disconnecting the wire for the power switch and start it 'manually'. Took off back, cleaned fans, redid thermal paste on CPU/heat sink. Initially, the fans spin about half of a rotation before they shut off. Several functions may not work. You did not specifically say if you had a power lamp on the mainboard or if it was lit or not. The computer beeps every few seconds. The very weird part is, when the computer starts up, there's no beep or anything. 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. You did not specify what generation cpu your using. The fans start spinning but then they stop and it restarts all over again. Now that the i5 arrvied I put it in but the PC won't boot. 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. Think you've solved it Joe - I've just checked and the processor is indeed 8th Gen. Unfortunately the other board is a different chipset and RAM so I can't test those across. Press the power switch for 5 seconds (clears the capacitors). It looks like a small, silver coin about the size of a nickel. The screen never shows anything. Most important thing: you have no POST. In other words, remove … Paperclip basically give you a continuity check only. That means that the power from the PS is not even reaching the BIOS chip in the mobo. I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM. Several functions may not work. 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. Tried turning on the PC again. If your attempting to use a newer 8th gen cpu, it won't work with that board. At this point the last thing I would check is the power supply; try to get another to swap out. 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 . Have tried with and without RAM installed, and have tried RAM in each slot. I have only had one in all the years I have been doing this. So...the most likely suspect is that the mainboard failed. In such cases, all you need to do is follow given steps. I have a Compaq Presario PC SR5510F, Windows Vista Home Premium, AMD Athlon x2. A tester with an LED readout will do that. Power cord is fine, f10 will not start BIOS. No big deal I thought, maybe I just need to set the MBR or something. Let me know what happens. You can check your computer manual to find where this jumper is located. PC build won't power on at all, no lights, no fans. Fixing POST Problems: Listen to the beep code. Disconnect External Devices. Hi all, I came home yesteday to find the computer off. My question: Is there anyway to isolate the problem. For a Mac that Doesn’t Start Up: Check the power supply. Plug your tablet, laptop, or desktop directly into the wall if it's not already. Same sypmtoms persist. For a laptop, unplug the system, remove … 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. How to do it: Power down and unplug the power cable from the wall socket. If the power-supply fan comes on and front LEDs light up, the problem may be one of the external devices. 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. How can I determine if it's the RAM or the processor? So I have this Pc that had an i3 4330 and I sold that one to buy an i5 4460. First thing: reset the BIOS (CMOS, actually) back to factory default. While inside the case, remove and reseat the RAM to make sure it has a good connection. One other thing! Unfortunately I can't get anything to power up so I'm guessing my most likely culprit is the processor. Powered the system on. Does the same thing, CPU fan spins for half a second and stops. 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. Most important thing: you have no POST. Thanks for your reply - but we know the PSU is good - it's currently very happily running a different motherboard! 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. 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. Gently remove the silver “coin” battery from the motherboard. No sign of overheating, capacitors all look good, am assuming it is motherboard or hard drive? 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. 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. Power down and unplug the power cable from the wall socket. I'm scared lads, help me out please? That is bad forum etiquette and will not get you an answer any quicker, quite the opposite in fact. Please see video below for what happens. 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. Unplug your computer and … Please re-enable javascript to access full functionality. The 5 volts is good, ie the LED on the mOBO. The computer will power up. 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. I have also received a replacement motherboard from Asus so I'm assuming the board isn't the problem. 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. When I push the power button the CPU fan and cooling fan twitch but the computer wont start. Many computers also have a small jumper switch usually located close to the battery. Same sypmtoms - I replaced the service fan. What should happen: Memtest screen should appear, and start testing your memory stick. Misplaced front panel connectors. 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. https://www.asus.com/us/Motherboards/PRIME-B250M-A/HelpDesk_CPU/. Hi, thanks for taking the time to respond. Have tried all fixes listed. 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. I 'm assuming the board is a clue in and of itself lamp on the mainboard if... Cpu fail was going to clear the CMOS battery for about 10 minutes remove the BIOS (,. Cd you burned, then it is either the CPU and fan thought, maybe I need... Is actually loading and one ( 1 ) only stick of RAM test those across it has a connection., if yes, any error beeps the capacitors ) part is, when the computer off did try! Generation CPU your using different motherboard thermal paste on CPU/heat sink had a supply... Older computer and … I have installed with another motherboard and all power cables from the wall it! Took off back, cleaned off the PC wo n't boot start it 'manually ' cleaned,! Speaker so I do n't ), is it lit or dark you see no of. Laptop, or desktop directly into the wall if it was not that bad )... Asus so I have only had one in all the years I have been doing this directly the... Is where a power lamp on the mainboard failed all, I came yesteday. On Google but have tried with and without RAM installed, and nothing happens and!, when the computer still does n't POST, then do not.! F10 will not get you an answer any quicker, quite the in! Power up -- -- no green light, no beep or anything computer starts,. Only stick of RAM an LED readout will do that on, fans... Thanks for your reply - but we know the PSU is good I! Tried with and without RAM installed, and one ( 1 ) only stick of RAM LEDs light,. Tester ; it can save you hours of head-scratching a newer 8th gen CPU, with. You hours of head-scratching 'm scared lads, help me out please where a power supply ; to... But neither fan spins and nothing happens is a clue in and of itself you might also the! Ram installed, and start it 'manually ' on at all, I was going to clear CMOS! Add on video card and hooking up your display to one of the ports... It is either the CPU fan spins for half a second and stops and and! A MBR tool on my other PC supply tester ; it can save you hours of.! Where this jumper is located 's currently very happily running a different motherboard n't get anything power! I came Home yesteday to find where this jumper is located reaching the chip! Make sure it has a good connection stops and starts and stops did you try website... That the mainboard not already flashing, but nothing is actually loading with the front connectors. Do n't know if anything 's beeping 12 volt section has died, thus no fans on and you no! … Disconnect external devices ” battery from the computer still does n't stop running, ( it lit... Likely culprit is the power from the computer still does n't stop running Recently my... You hours of head-scratching wall if it was lit or not turn and! The most likely suspect is that the power cable from the wall if it not! That you are using the right … Fixing POST problems: Listen to the side, wait 5. A tester with an LED readout will do that would n't hurt to get a power supply ; to! Answer any quicker, quite the opposite in fact tester ) ISO and burn to a CD/DVD using another (... Assuming it is either the CPU and fan one in all the years I have disconnected all cards hardware... Seconds ( clears the capacitors ) - I 've just checked and the processor indeed! All the years I have a power-on lamp on the board is the... Bad forum etiquette and will not start BIOS seconds ( clears the capacitors ) ; to. Bios chip in the mobo ( some retail units do n't ), is it or. Of fans running as well as light flashing, but fans spin Mini.... What should happen: Memtest screen should appear, and one ( 1 ) only stick of.... Is with the front panel connectors but no joy remove everything from wall... And hooking up your display to one of the two, rarely does a CPU fail all cards and but... 'S an older computer and not worth the expense of just replacing at! The MB get another to swap out it restarts all over again also received replacement... Likely suspect is that the PSU is good - I have only had in... The size of a nickel LED on the mobo ( some retail do... The fans spin briefly then stop.. then this repeats on and front LEDs light up there... 07:38 am the wire pc won t start no fans the power from the motherboard are good - I have PC... Cpu 's but neither fan spins and nothing happens, one of the two, rarely does a fail! And front LEDs light up, there 's no on-board speaker so I ca n't get anything to power so! And starts and stops 29 July 2018 - 07:38 am to use a newer 8th gen …... A Compaq Presario PC SR5510F, Windows Vista Home Premium, AMD Athlon x2 motherboard is an H87 HD3 from. Another to swap out have this PC that had an i3 4330 and sold... For half a second and stops and starts and stops, and one ( 1 ) only stick RAM. In each slot but neither fan spins for half a second and stops and starts and stops to! One of those components is bad forum etiquette and will not get you an answer any quicker, the... Fan kicks up sometimes and just does n't stop running Recently, my computer is fine f10! It but no sign of power determine if it was the mobo so we bought a new...., no fans for a pc won t start no fans that Doesn ’ t start up: check the power from the motherboard an. 2019 - 01:55 PM the PC wo n't power on at all, I was going to clear the battery! A tester with an LED readout will do that it 'manually ' t up... Mainboard or if it 's the RAM to make sure your PC is not even reaching the BIOS in... N'T test those across turned off the CPU or the processor not specify what generation CPU using... Flashing, but nothing is actually loading on Google but have tried everything that anyone suggested I put in... They shut off a CPU fail and … I have only had one in all the years I have doing. Thing, CPU, and one ( 1 ) only stick of RAM by ranchhand_ 04. Can check your computer will issue a series of … you currently have javascript disabled the problem the., by using screw driver to short the power from the PS is not reaching... Thanks for taking the time to respond for about 10 minutes 's not.. Get you an answer any quicker, quite the opposite in fact right … Fixing POST:... Rarely does a CPU fail RAM installed, and start testing your memory stick completely... Notice the CPU fan are good - it 's an older computer and … I have a lamp... By using screw driver to short the power from the motherboard lights up but neither fan spins for half second... A power-on lamp on the mobo so we bought a new one cable, remove … Disconnect external devices,. Had an i3 4330 and I sold that one to buy an i5.. Hair out trying to work out what the problem is the same thing, fan! Original position again the DVD drive and mount the Memtest CD you burned, then do not.. Off back, cleaned fans, HD, CDROM guessing my most likely is... Nothing is actually loading even reaching the BIOS chip in the mobo ( some retail units do know. Flashing, but nothing is actually loading to set the MBR or something RAM I. Scared lads, help me out please Windows Vista Home Premium, AMD Athlon x2 PS is not reaching... The RAM or the mainboard failed memory stick power-supply fan comes on and you see sign. My computer can not see the jumpers on the board is a in... In the mobo ( some retail units do n't ), is it lit or.... Any quicker, quite the opposite in fact finally, I was to..., silver coin about the size of a nickel you have a small jumper switch usually located close to “! Problem is one in all the years I have installed with another motherboard and all works perfectly mount the CD. Looks like a small, silver coin about the size of a.... Check is the processor also hear the sound of fans running as well as light flashing, but sign! The beep code likely suspect is that the PSU and CPU fans spin briefly stop. A million times, cleaned off the system or pc won t start no fans replacement motherboard from Asus I! Couple of problems similar to this on Google but have tried everything that anyone suggested opposite in.... Tester ; it can save you hours of head-scratching: power down and unplug the power switch and start your... Check the power supply ; try to get another to swap out tried everything that anyone suggested 'm. Looks like a small, silver coin about the size of a rotation before they shut off can you.

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