BleepingComputer.com: computer wont turn on

Hey,

Yesterday i wanted to turn on my computer as normal, but to my surprise my PC for some reason suddenly wouldn't turn on at all anymore. Im sure its recieving power, i can hear some crackling when i insert the plug into my PC



I built it myself but i've been using it (without problems) for the past 2(ish) years.

My PC's Specs are:


GPU: Sapphire HD 4870
CPU: AMD Phenom 2 x3
Running windows 7 Ultimate
Motherboard: Gigabyte MA790XT-UD4P

I dont really know what else i should include so ill add any info requested in my next reply. I have asked a question on the malware forum earlier which has a few logs, but i cant find that topic on my iphone which im using right now.

Please see if you can help me,

Thibauld

i can hear some crackling when i insert the plug into my PC.
I'm not really sure what you mean by this but you should not be hearing any crackling.
When you investigate this crackling be careful it could be a power supply shorting to power or ground.
Do the fans come on?

Layback Bear, on 18 June 2011 - 09:36 AM, said:

No none of the fans or any lights come on, and i dont hear any sounds at all coming from the PC

It isnt any loud crackling, i mean the same sound you hear as when you insert any plug into an outlet.

You should always switch off the power point before plugging the power cable to the computer.

Thats not the problem though...

Hi thibauld,

The first thing you need to check is the power supply itself, you really want to hope that this is the problem really. Otherwise it could be the CPU or motherboard.

After checking that the supply plugs are firmly connected to the motherboard you can check the different voltage supplies are correct with a multimeter (google this if unsure), or you can buy a power supply tester if you are uncomfortable using the multimeter. It would be much easier and more precise however if you could borrow a known working power supply from another system, or put the suspect power supply in another system to see results.

Good Luck thibauld.

Hi again,

I havent done any of the testing suggested in the last reply yet, but ive had no (hardware) problems with my PC for the last 2 years, so i dont think it can be a voltage porblem? Unless thats what broken on the PSU now... Also i cant find anything that lets me change the voltage on my PSU, but i believe i saw someone somewhere suggesting me that i'd check to see if it had the right setting.

Thibauld

Also ive checked that all the cables are connected firmly, thats not the problem (unless one is broken)

This post has been edited by thibauld: 18 June 2011 - 08:05 PM

I would replace the power supply with a quality one.