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My PC won't boot up. I was playing games and suddenly the PC screen goes black and I find it off. It wont turn on again.

My pc suddenly goes black after a continuous usage or gaming for half an hour or so.
One day, while I was playing game, suddenly pc turned off (sudden death), and rebooted up again.
This problem continued for aweek and now-a-days it dies suddenly and dont turn on for a long duration.
I tried cleanning ram, short circuitong power swith, removing GPU and some peripherals but the problem presists.
When it dies it dont turn on -- gpu LED stays green. And sooner I press power, hdd turns on but gpu and cpu fans stay still. Sometimes it reboots again and again (monitor stays black).
I don't have another psu to check.
I am sure it is not gpu because the same happens when gpu removed.
On the recent timeline -- no significant h/w change. But there was a problem with the monitor power cable's earthing connection for which, the VGA plug of monitor was a bit charged, but now solved with proper earthing conbection.
Is it the mobo?
.
My PC-
450 W COOLER MASTER THUNDER
FX 6100
GIGABYTE GA 78-LMT USB3
6 GB 1 CHANNEL 669 MHz (4 + 2)
SEGATE 1 TB SATA + 80 GB IDE
ASUS GHz Edition HD 7770 1 GB
DVD RW
512 kbps BROADBAND
BLUETOOTH DEVICE
Mouse + keyboard
6 answers Last reply Best Answer
More about boot playing games suddenly screen black find wont turn
  1. either the psu or the board has died check with a different psu if the problem persist then change the board..
  2. Did you already try to boot it with only mobo, cpu and psu after the PC won't turn on? Sounds like a defect motherboard or psu.

    But best would be to check it with a different psu or take it to a local pc shop, they can see what is wrong. AFAIK there is no way to determine whether it's a faulty mobo or psu without having an replacement psu/mobo.

    Another option would be to either buy a new psu, see if the problem still persists. If it does, it's very likely the motherboard.
  3. How can I check the psu is dead without buying another?
    U know what I.mean.... A gaming psu even 450w is very costly
  4. sourendrakundu said:
    How can I check the psu is dead without buying another?
    U know what I.mean.... A gaming psu even 450w is very costly


    Borrow one off a friend, or scavenge one from an older computer if possible.
  5. Best answer
    sourendrakundu said:
    How can I check the psu is dead without buying another?
    U know what I.mean.... A gaming psu even 450w is very costly

    actually you dont need a branded psu test with a cheap iball or frontec whatever just make sure to remove the gpu before testing...just check that motherboard is okk if the motherboard is fine then it must be a faulty card or psu.. in that case you can take your card to a friend house just for testing if he have a good 400 watt psu..and for testing the card do a furmark test..
  6. Solved. There was a problem with the power cable comes from psu to the mother board....
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