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My computer doesnt boot up but the fan is spinning and no lights on keyboard or on mouse

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  • John McGrath May 11, 2010

    Which fan? What kind of computer is it? Does it make a beeping noise when you start it? How many beeps?

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You power supply is likely failing. Portions of it are giving power to parts of the system, but not enough to POST the system. If you see nothing on your monitor that will confirm it. If you have another computer to test it's power supply connection with, you see if it boots.

Posted on Nov 18, 2009

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Posted on Jan 02, 2017

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I have a dell dx series, I just plugged this bad boy in, it hasn't been pluged in for 2 months. it will turn on I can hear the fan but my mouse, keyboard, or any of the other plug ins wont work, I get no...


must have taken a hit before you tried turning it on in the 2 months. dropped, or shocked electrically or someone was messing withit.
or it wasn't working before you got it. only way is to have it checked out. one thing, the fan over the heat sink(over the cpu processor chip), might not be working. take a look and if it does not spin(fan) when you power up then this will prevent pc from booting. have seen this happen before. move wires from van and check connection to motherboard. if it does not spin then take it to shop tell them what you think and they may not charge you to verify it. good luck

Aug 24, 2013 | Gateway Computers & Internet

1 Answer

When pluged into outlet fans spins and doesnt stop, wont boot


Fan spinning hard is usually a CPU issue.
If you've made any hardware changes to your computer, undo them. This happened to me when I was trying to upgrade my Processor (CPU) and I had the wrong kind.

Mar 09, 2010 | HP Pavilion m7560n PC Desktop

1 Answer

I powered down my computer because I couldn't get my mouse to work. When I powered it back up nothing booted up! The lights are all on and fans are running, but the monitor isn't getting any signal from...


I beleive that this is a virus. some Viruses corrupt the device settings on a mouse or keyboard. you will to try to boot the computer in safe mode. to this when you tun the computer on press the F8 btton on the keyboard. then select safe mode with networking and hit enter. when the computer boots up you will need to run a virus scan. another option is to take the hard drive out of the computer and put it in another computer and run a virus scan on it. Viruses that usually cause this type of problems are redirect viruses found when searching on google.

Jan 09, 2010 | Compaq Presario SR1000T (568657) PC...

1 Answer

My emachine T1742 desktop will not turn on. When plugged in the power supply's fan turns on, cpu fan doesnt start, both hdd/power led's flicker and pressing power button doesnt power on/off system.


Disconnect all the devices from the computer(tower) including keyboard, mouse, monitor(everything)..even the power cable

Now keep on holding down the power button on the computer tower for 15-30 seconds..

Now release the power button, plug in the power cable, monitor, keyboard, mouse and turn on the computer...

If it works, great!!!

Otherwise, take it for repair..

Dec 03, 2009 | E-Machines eMachines Desktop PC

1 Answer

HP Pavilion a1150y fans run when powered on but windows doesn't load, monitor, mouse and keyboard do not work. (Running Windows XP)


Believe it or not, it's due to a weak power supply. More specifically, weak voltage rail/s caused by failing Electrolytic Capacitors.

A bad computer power supply is about 70% of computer failure.

ALL the light use less than 1 Watt. EACH fan uses 2 to 3 Watts.

A processor uses 55 to 125 Watts. Depends on the make and model.

Since the power supply is weak, it doesn't have enough power to turn the processor on.
No processor, nothing to find the Boot record on the harddrive. Nothing to get the Operating System going. (Example: Windows XP)

No computer running, there is no signal to the monitor.
Just enough power to light lights, and spin fans.

Apr 13, 2009 | HP Computers & Internet

1 Answer

PLEASE HELP ME!!!!!!!!!


Test your power supply for correct voltages. If they are all OK, then your motherboard is toast.

May 13, 2017 | E-Machines eMachines Refurbished EMA...

1 Answer

Pc Seems to be dead wont load bios post moust doesnt work or keyboard or monitor


I have the same problem, the CPU fan spins, keyboard lights blink, no start up screen, or bios.
But, when I push a few times on the pc reset button, then the CPU fan is becoming still, the keyboard light are out and I can start the computer again in a normal way.
Can this one be a temporally solution for you too? Do you have any suggestion about?
I guess it can be an electricity dysfunction of a wrong fixed cable.

Oct 15, 2008 | Biostar P4M80-M4 Motherboard

2 Answers

Mouse and Keyboard not recognized


i think ur computer hangup after booting
there may be some problum in ur op system . it hase virous.
2nd u test ur mouse and keyboard to another computer if they work correctly u have to reinstall ur op sys
u can call me 91-9329204658 india

Jun 01, 2008 | E-Machines eMachines Desktop PC

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