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The PC won't start, won't even reach the boot up stage. Keeps tripping and trying to power back on.

When switching it on, the fan starts and it sounds like the HD wants to kick in, but then suddenly it all "trips", with the fan switching off and a beep noise with it. The pc automatically tries to start again, and the same cycle continues. I have unplugged it and left it unplugged for a few minutes with same results. Have also disconnected any unnecessary extras (printer, speakers). Could you please help?

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2 Answers

Neal Schwartz

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  • 24 Answers

You need anew power suply

Posted on Mar 09, 2016

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Coco the Bean

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Open it up and turn it on and see if the power supply fan stays on if not replace it.
If it was a bad memory chip the beeping wouldn't stop.

Posted on Feb 29, 2016

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5 Related Answers

sandrew

andrew pester

  • 2961 Answers

SOURCE: At Start up, beeps several times, won't boot.

This could be an overheating processor problem,dependant on the motherboard and what the beeps mean. The fan speeds up to cool it down, there may be dust collected in the heatsink on top of the processor, check it and gently brush off dust. Check that the vents on the side are atleast 6 inches clear of anything for good circulation. To see if it is an overheating thing, remove both sides of pc and run it in an open space to see if the same thing happens. While you have the side off just check your memory and other peripheral cards are all seated correctly and not loose.

Posted on Jan 22, 2007

fwadley

Farren Wadley

  • 482 Answers

SOURCE: PC powers up but wont boot

I would start with a new power box, then a motherboard. then the hard drive.

Posted on Dec 23, 2007

XXXX

  • 39 Answers

SOURCE: No image input and pc makes weird sounds on start up

Remove & reinstall all the memory sticks (reseat). If that did not fix the problem, remove all the memory sticks and reinstall them one at a time to test them in an effort to determine if one of them has gone bad. Use this same methodology to test all of your device cards.

Check to make sure the CPU fan wire is connected to the fan header on the motherboard and that the fan is operational. Most motherboards (especially AMD) require the CPU fan to be operational and connected to the motherboard to avoid frying the CPU. However, this requirement can be disabled in the bios to accomodate CPU fans that do not run off of the motherboard fan header.

Can you get into the bios? If so, I would suspect the CPU and memory are ok. Does the clock have the right time? If the time on the clock is wrong it could indicate your bios settings are not being maintained after you power down and you may need a new CMOS battery.

Usually a beeping motherboard is an indication of a hardware issue. The data on your hard drive is probably intact. If you need to retrieve some files from the drive for your graduation, you can always install the hard drive into a USB external hard drive enclosure and connect it to an oprational computer.

Hope this helps - good luck!

Posted on Nov 01, 2008

Anonymous

  • 1 Answer

SOURCE: ASRock K7S41 / K7S41GX, sound 3 Beeps 3 times, then power off automatically

I had 3 beeps, pause, 3beeps, pause and so on.

Defective SMD transistor near the ATX power connector. Original is a 2SB1202 (marking B1202).
I bought a 2SB1203 which is stronger and soldered it in. The K7S41GX board runs as fresh as from the dealer.

Posted on Nov 20, 2008

bob_computer

Project NOMAD

  • 3153 Answers

SOURCE: Compaq: CPU fan has failed PC will automatically power down

Your fan speeds up and slows down in response to temperature inside the computer. More so the CPU.

I would suggest getting a can of compressed air made for computers

take it outside, take of the side and blow all the gunk out of there, Really go to town around the fan (you might want to wear eye protection)
While you are in there just check that the CPU cooler itself is not loose

If it is it will have to be re-seated.

If it needs re-seating don't just take it off and put it back on as that might make things worse with your temperature problem they have to be cleaned and new thermal grease put on ($2-5)

DON'T remove the CPU just the fan/cooler assembly.

You must clean both the surfaces without scraping anything off. Use isopropynol alcohol and cotton bud sticks until both surfaces are clean, you can use your finger nail to scrape harder residue if you wish but nothing else.

DON'T pour the alcohol over the CPU

Now apply some new thermal grease (most computer shops have it)

Be careful about how much you put on

Here are
some basic instructions


Once you have re-assembled your cooler and re-connected it check everything is OK and power up the computer.

If everything went to plan you should now be back in business
 
Hope this gives you the information you need

Bob
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It would be very decent of you to consider the quality of our experts answers and judge them accordingly as you pass through fixYa.
Thank you

Posted on Nov 27, 2009

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