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My computer turns off and on and makes a noises

I have a compaq and it turns it self off and on and makes noises

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Re: my computer turns off and on and makes a noises

You may have a bad fan that overheats the computer because it is noisy (slow). Time to open it up and blow it out.

Posted on Jan 02, 2008

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Plug into motherboard, turn on computer.....(you dont need it in computer to test just pins)
Or you could buy a Power supply test device

May 17, 2012 | Compaq PS-5500-1C (244163001) 50-Watt...

1 Answer

I have a compaq 7020 and everything is plugged in right but when I turn on monitor the green light comes on but blinks and turns off. Why??

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive

Test all leads that attach to your hard drive including electrical extensions IDE,SATA

the leads from your "((motherboard to your hard drive))" make sure they have a secure connection and are not faulty or just replace them there probably old and faulty

make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they could be faulty a computer needs its connections to continue its cycle and have an end so any faulty leads will end up with a computer error If your computer came with a motherboard disc the drivers could be on it or you might have a dirty graphics card remove the graphics card and clean the socket

hope this helps

May 26, 2011 | Compaq System Power Supplies

1 Answer

When I put my PSU on the ON position, it makes no noise, but when I turn it off, it makes a hissing noise and does the same if I unplug it. It was bought two weeks ago and made noise when I first used it,...

if its only 2 weeks old should and its brand new be under warranty

Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

hope this helps and good luck building your first computer

Apr 29, 2011 | Eagle Tech ET-PSVT550E 550W ATX12V v2.0...

1 Answer

Compaq presario switch button has failed

open the switch three wires red,green,black.or something get another switch with familiar wires make sure the colours go in the correct place

Jul 27, 2010 | Compaq System Power Supplies

1 Answer

When i press the on switch the computer light turn red color and have a beep sound.

1 or 2 beeps is normal when turning on, for most mobo's. Check the motherboard owners manual for beep errors, for example 3 beeps might be a graphics card error, 4 keyboard error, or CPU or memory. it's in the manual for the specific motherboard. You can get it from the manufacturer's website. I can not supply a link to get you the online manual because you didn't specify what kind of motherboard you are using. Does it still boot? Do you see the BIOS on screen? Any error messages? When you press the power button your computer normally should beep once or twice and then performs a POST... Power-On-Self-Test. and this is when you get any error beeps. It could be something simple like forgot to hook up the monitor, to CPU or memory is loose, or memory is not compatible if you upgraded the memory.

Oct 20, 2009 | HP (350030-001) for Compaq dc7100...

1 Answer

Computer wont turn back on after power outage

Try unplugging the cord from the back of the computer for about 5 minutes and then try it again

Apr 14, 2009 | Compaq System Power Supplies

1 Answer

Loud Humming Noise from P/Supply

Yes, it is time to replace it. Open the case and make sure it is a standard size before you buy another one. Just measure length, width & height. You can put a higher wattage supply in there, it just won't have to work as hard to power your computer.

Apr 07, 2009 | HP and Compaq Pavilion Replacement 200w...

1 Answer

Compaq presario desktop computer sr1130nx on/off switch

To trouble shoot this problem,I would open the case and make sure the cable are tight from the power switch to the motherboard, you can do this by sliding off the front of the case.

Once the front case is off you should be able with a pen or pencil push the switch slightly to turn it on. But watch and see is how far down the on/off switch goes in.

Jan 21, 2009 | Compaq System Power Supplies

1 Answer

Flashing Green Light on Power Supply

get yourself a themaltake ps

make sure you remove the old one and take it with you to the shop or get the shop to do it for you if you dont have the expertise yourself.

hope this helps

Dec 31, 2008 | Compaq 300Wt Presario ATX Power Supply...

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URGENT HELP... i have broken my computer by OVERCLOCKING it...please help

First of all, it seems unlikely that you have actually broken anything.

Please look carefully at the options in the main setup menu (BIOS) after you press the DEL key... There sshould be an option to "loade defalut settings" or "load optimised settings"

If so select this option and F10 to save/exit and allow it to boot

Jun 29, 2008 | System Power Supplies

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