If all else fails, get a qualified computer repair technician to find out what the problem is and how to get it fixed.

Motherboard sounds like the culprit to me too. If not... buy a new motherboard. It solved my similar issue. Couldn't get into Cmos, clearing cmos didn't help.

Spoke to the owner of the PC, his said just over 12 months ago he had motherboard, CPU, Memory all replaced, because motherboard dead, found oil on the motherboard. It sounds to me like the fan controller they use might be faulty.

Case is starting to rust. Just because it connects doesn't mean it is compatible. If this doesn’t work … If that doesn’t work then try starting with a minimum configuration, power supply connected to mother board, one stick of memory unless the memory is paired. But says new cpu installed, enter cmos to configure.

Computer wont turn on, half second movement of CPU fan only, [Solved] Computer Won't Turn On (Green Light Blinking), computer won't turn no, no power, no fan running. If you open your computer, remove all connected devices and expansion cards, then turned it on again and it still won’t boot but the fans spin, then you’re probably looking at an issue of power supply. Editor’s Note: This post was originally published in November 2017 and has been since completely revamped and updated for freshness, accuracy, and comprehensiveness. Because it could not be detecting.

You can check the voltages coming out of the power supply, you can check the cables to make sure they are seated properly. Opened the side case, is a light on the motherboard, so it is getting power. PC build made fan grindig sound and now won't turn on. Are you running an add in graphics card? Some motherboards have a key componation that resets the BIOS or remove battery clear . I enter setup and tried different settings, to no avail.

October 22 by Random _User_101 Or it means the PSU is bad or going bad and only thinks there's a problem with the motherboard. Is that the same computer or a different one? The drop of liquid may have been capacitor electrolyte.

Corrupted BIOS?

Graphics card - on bopard or a card in slot?

This will reset the BIOS setting to the “new” computer defaults.

Check the motherboard.

Computing.Net cannot verify the validity of the statements made on this Hard drive plugged in? Does anybody know what is wrong and how to fix it? I have used the PC before, and it worked. But I don't think the message in device manager is significant. You don't know if any of the power supplies were good or of sufficient capacity to run the system.

Notice the CPU fan spins for half a second and stops. 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.

That doesn't mean your PSU is good as it must provide several different voltages at sufficient current for the PC to work.

Here’s how to fix this. Does the same thing, CPU fan spins for half a second and stops. One of the reasons your computer won’t boot but the fans spin could be a bad RAM. System was running OK, just turned it on one morning, didn't work, opened side of case to get better look, pressed power button again, fan spins for half a second. If you see a yellow or amber light on, it could indicate a bad motherboard.

If possible remove the front panel/facia and make sure the connections are still hooked up to the front I/O. I'm replacing the PSU too, old one bit rusty from salt air, and possibly a capacitor leaked fluid onto m/b. no difference.

Was this system previously running OK? Terms — Such

He does live in apartment building on the beach. And would I need to put the battery back in after the 10+ minutes is up?

I took out the graphics card and plugged monitor into onboard vga. Even one bed cap can cause problems. I've had some that lasted 7 years and others 4 so it is always prudent to check the voltage anyway.

The rest of the parts of the PC are random parts I had around(Motherboard, CPU, case). Jessica Parnelli Fawkes Computing.Net and Compnet Ventures, LLC hereby disclaim all responsibility

Have you tried unplugging everything except 1 RAM card (alernate these) and power supply? It's a 3.0V DC battery, if it is <2.6V DC replace it. Hi, so I recently finished a PC build and I went to power it on the fans spun, but no startup.

Does that all the time now. Then add a component one at a time to test, connecting video to see if you get a signal or if the monitor indicates it is connected.

*sigh*, 03/15/2019 by

This might be (as it usually is) a PSU failure.

When the battery voltage gets below 2.6V then there is a chance that the settings can become corrupted which can prevent a normal start when the desktop is turned on. No I haven't, but i will take the graphics card out and try with onboard video.

Then i figured i change the cpu, as i had a spare, and noticed some oil/water near the PSU side of the cpu.

And i decided to test the cmos battery from old motherboard works ok, so will keep as spare if need later on.

Of course, we suggest unplugging the power cord and removing, primarily, all external peripherals and then moving to the internal hardware.


site. Actually, the CPU fan was off.

Likely just something about how the Nvidia drivers are installed.

Did you recently install a new graphics card by chance? Taking the faulty ram out solved the issue for me.

The best way to clear ram is with a cloth and gently.

So gets alot of salt air. You’ll probably need to replace it.

I notice you've got a second thread going: Yes ur correct Dave, I took the motherboard out of the case had it sitting on non static bag and power supply and montior connected to it only. In this case, remove the RAM from its slot, then clean it and return it back to the same slot or try a different slot altogether. A 350w could run on the system, but i tried 430w and 550w. Then plug power cable in and switch on. But now it's not even doing that, again? Similarly, when your computer won’t boot but fans spin constantly, it could be a sign of high temperatures or overheating in your computer, which if not dealt with, can cause your computer to fail or refuse to boot until it cools down. 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.

I did the following: 1) unplug all cables 2) unplug CPU fan wire from the motherboard 3) plug CPU fan … And gives me the error bad bios checksum, recovery, but it cant find my usb stick, tried plugging it into all usb ports, it wont find it. Please log in again. It has a pci graphics card in it, PSU says 420w. Make sure cables aren't worn and maybe shorting. I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM.

The information on Computing.Net is the opinions of its users. I have tried unplugging the PSU and holding power for 30 seconds and that didn’t work. Also, if there's a graphics card, and your monitor is plugged into that, try switching to the onboard video ports on the mobo.

Random _User_101, I think for a corrupted BIOS, you can download a new revision of it and burn it to a flash drive, than try to boot from USB. When your computer’s components are faulty or are damaged, they can prevent your machine from booting. The login page will open in a new tab. For my new desktop, I noticed the fans running were not CPU fans.

They were the side and back fan. Have you tried various components in another working system? I had issue with the ram.. 1 of the ram stick was faulty. Loose RAM? The light on the motherboard is probably just a 5 v LED.

The hard drive is plugged in, the ram is brand new, and the PSU is also new.

Sounds like this is the same thing, Owner insists its condensation build up and water drips.

You can also try switching positions of the RAM cards to different sockets. As mentioned earlier, one of the reasons your computer may refuse to boot but the fans spin include a poor power supply.

@random_user_101. Or it means both are bad.

Add a comment if there’s anything specific about the machine.

Suggest giving the all the cables connected to it a bit of a wiggle. Computers that generally don't include an integrated display, and are meant to be stationary. I took that as one of the psu capacitors leaked and dripped down onto the motherboard, maybe shorting it.

Tried turning on the PC again.

Often, it has enough power to run the fan (low-power) and hard time running anything else. If your fans spin beyond the normal way, you need to check that the airflow around it is not hindered. opinions may not be accurate and they are to be used at your own risk. Tried turning the computer on again, by using screw driver to short the power switch pins. Flashed the bios thru ez flash in cmos using usb stick. They strong enuff. Such components include RAM chips, motherboard, and even the BIOS. Given the initial symptoms I wouldn't have thought you'd get it going again, even just to post. 3 PSU and it happens to all, tested all PSU in another PC they all work. I never heard of anything like that happening to a PC. Gently remove the silver “coin” battery from the motherboard. After logging in you can close it and return to this page. …

So next i downloaded latest bios update from asus website. Accessibility.

No idea what the fan problem is, as I would expect the bios to spin up the fan long before 90 degrees -- without needing any software (Precision/etc) installed. Here’s what you can do if your computer won’t boot but fans spin.

Tried turning the computer on again, by using screw driver to short the power switch pins.

In this case, you can insert one at a time then try and confirm which one is problematic. When do I put the coin back in, October 23 by If your computer won’t boot, but the fans spin, and you hear a beep sound as if it is booting, then one of your peripherals could be causing the problem.
Notice the CPU fan spins for half a second and stops. [Solved] my computer shuts down randomly and it won't turn on agin? When a PSU does what yours is doing it's usually because the PSU is detecting a problem with the motherboard and shutting off. Found maybe 1 capacitor inside the PSU that had a hole in, didn't look like it burst open or leaked thou. Thank you for the advice.

Unplugged everything from the motherboard except CPU and PSU, no change. Unplugged power cable for 10mins, then plugged back, turn on pc enter cmos, to see if it held the time, it did, so battery dont seem to be flat. (If it has any), © 2020 iFixit — Licensed under Creative Commons — Privacy — If so, what one. If your computer won’t boot but fans spin, you can also note down the sequence of the beeps or flashing lights your computer shows while trying to boot, then check with your computer’s manufacturer what the sequence means.

You can try a different wall outlet and plug into it, then try to boot your computer again. This will reset the BIOS setting to the “new” computer defaults.

Check that the motherboard is installed correctly--not shorting anywhere on the case. If you see a yellow or amber light on, it could indicate a bad motherboard. I don't think i sweating, but i cleaned it up. and liability for the content of Computing.Net and its accuracy. Jessica Parnelli Fawkes, Is there an OS on the drive? Look for bulging or leaking capacitors. I press button button, and i get nothing, no display or lights.


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