PC keeps restarting

[waazeem]

Hi guys i am really going to need your help here.
my pc keeps on restarting when i turn it on in the morning (or after few hours since last use), system turns on for two seconds then restart and it keeps on like this for a while.
i had the same problem two months back but i removed one ram and issue solved with it but for a while.
Don't mind my english guys
i have tried everything, i even bought a new ram two days ago still issue persists.
when system finally turns on, i can play black ops 3 or some other game for hours it won't restart, but sometimes just by doing a simple task like copy/paste or playing a video will cause a restart of the system as well.
i disconnected all hardware and wires and reconnected them, cleaned the system.did most of the stuff i could find via google. (like shutting off auto restart, checked memory diagnostic, i even updated my bios. still no luck.

Intel Core i7-3770K CPU
gigabyte ga-z77x-ud5h wi-bt motherboard
kingston hyperX fury 8gb ram now ( previously corsair vengeance 8 gb- 4x2)
psu 550 cooler master
gigabyte 660ti oc graphics card
silicon power 240 gb ssd
windows 7 home premium 64 bit

 

[lodders]

Have you overclocked your computer?

If you have, then your problem sounds like my 3570k... Reduce your CPU speed 200Mhz and everything will be fine.

 

[waazeem]

Have you overclocked your computer?

If you have, then your problem sounds like my 3570k... Reduce your CPU speed 200Mhz and everything will be fine.

http://
http://imgur.com/5WPGmep


kindly see the image and tell me..
i never overclocked system before

 

[lodders]

Have you overclocked your computer?

If you have, then your problem sounds like my 3570k... Reduce your CPU speed 200Mhz and everything will be fine.

http://
http://imgur.com/5WPGmep


kindly see the image and tell me..
i never overclocked system before

not the same problem as I had then....
Unfortunately I'm not sure what else could cause this..

 

[waazeem]

yesterday i borrowed my friend's pc.
i put his processor in my system and still restart.
i couldn't check his psu in my system because his wires were all arranged. so i checked my psu in his system and it worked fine (his 3d card and motherboard are better than mine)
i checked his rams in my system still problem was there.
so only thing left is motherboard. and i don't know if i should give it for a repair or buy a new one. i don't know what could be causing this issue. because once system enters windows it keeps on restarting for a long time (although it won't restart in safe mode) but if windows is the issue why does it keep restarting for tons of times in the beginning when i press power button. it keeps restarting after a second or two i press power

 

[lodders]

If there is a poor connection or a damaged component on your motherboard, temperature changes or the vibration from the fans could trigger the problem.
Anyway, you have done some very good fault finding with your friends PC, so I guess its time for a new motherboard..
I would be surprised if a repair was cheaper than a replacement...