This involves unplugging or disconnecting any external hardware such as printers, USB drives, scanners, among others so that you leave only the basic components before trying again. The drop of liquid may have been capacitor electrolyte. Look at the photos of bad capacitors in the link below. Found maybe 1 capacitor inside the PSU that had a hole in, didn't look like it burst open or leaked thou. I decided to put it all back together and try clear the cmos, and i notice a drop of water on the motherboard. Sounds like a defective or undersized power supply. Does the same thing, CPU fan spins for half a second and stops. If so, what one. Graphics card - on bopard or a card in slot? Gently remove the silver “coin” battery from the motherboard. Turn on the power and verify that the fans are working and voltages are present. But I don't think the message in device manager is significant. 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. Likely just something about how the Nvidia drivers are installed. Bad PSU? In this case, you can insert one at a time then try and confirm which one is problematic. Computers that generally don't include an integrated display, and are meant to be stationary. Just because it connects doesn't mean it is compatible. (If it has any), © 2020 iFixit — Licensed under Creative Commons — Privacy — Random _User_101 I've had some that lasted 7 years and others 4 so it is always prudent to check the voltage anyway. I have used the PC before, and it worked. @jayeff how do I test to see what voltage the battery has? So flashed the bios, and gave bad bios checksum. 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. Add a comment if there’s anything specific about the machine. If you see a yellow or amber light on, it could indicate a bad motherboard. If not... buy a new motherboard. Are you running an add in graphics card? There are three main reasons why your computer won’t boot but fans spin: When the power supply to your computer fails, then it won’t start or power up, but the fans spin regardless. This will reset the BIOS setting to the “new” computer defaults. They were the side and back fan. It sounds to me like the fan controller they use might be faulty. Taking the faulty ram out solved the issue for me. You can try a different wall outlet and plug into it, then try to boot your computer again. No I haven't, but i will take the graphics card out and try with onboard video. Does the same thing, CPU fan spins for half a second and stops. Of course, we suggest unplugging the power cord and removing, primarily, all external peripherals and then moving to the internal hardware. I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM. Here’s what you can do if your computer won’t boot but fans spin. @jessica_fawkes. 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. opinions may not be accurate and they are to be used at your own risk. As mentioned earlier, one of the reasons your computer may refuse to boot but the fans spin include a poor power supply. Because it could not be detecting. If possible remove the front panel/facia and make sure the connections are still hooked up to the front I/O. When your computer’s components are faulty or are damaged, they can prevent your machine from booting. Loose RAM? 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. So gets alot of salt air. Joshua Wilson, DrGlowire [Solved] my computer shuts down randomly and it won't turn on agin? Sometimes the motherboard could have bad capacitors, which may cause the computer not to boot but the fans spin. You don't know if any of the power supplies were good or of sufficient capacity to run the system. Make sure cables aren't worn and maybe shorting. Flashed the bios thru ez flash in cmos using usb stick. Hi, so I recently finished a PC build and I went to power it on the fans spun, but no startup. You’ll probably need to replace it. Then it stopped posting again. 3 PSU and it happens to all, tested all PSU in another PC they all work. Some motherboards have a key componation that resets the BIOS or remove battery clear . That doesn't mean your PSU is good as it must provide several different voltages at sufficient current for the PC to work. October 22 by Couldn't get into Cmos, clearing cmos didn't help. Joshua Wilson. Often, it has enough power to run the fan (low-power) and hard time running anything else. Case is starting to rust. 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. Suggest giving the all the cables connected to it a bit of a wiggle. It solved my similar issue. This will reset the BIOS setting to the “new” computer defaults. The light on the motherboard is probably just a 5 v LED. A 350w could run on the system, but i tried 430w and 550w. None on the motherboard, gonna open the PSU case, see if capacitors leaking there or maybe glue melted, (i seen glue used before in PSU). 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. The RTC battery maintains the BIOS setting when the power is disconnected or turned off from the desktop. 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. I'm replacing the PSU too, old one bit rusty from salt air, and possibly a capacitor leaked fluid onto m/b. PC build made fan grindig sound and now won't turn on. Corrupted BIOS? I just went to turn it on and this happened. If your computer won’t boot but fans spin continuously, it indicates a problem that needs to be resolved as soon as possible. Tried turning on the PC again. Thats how i got it to post, then the new cpu installed msg kept popping up, and altering the bios didnt help. You can check the voltages coming out of the power supply, you can check the cables to make sure they are seated properly. Given the initial symptoms I wouldn't have thought you'd get it going again, even just to post.

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