Computer resets instantly by it self

[FariborZ Baghaei]

Hey everyone,
Recently my computer turned off instantly in game and after that it doesn't turn on,
I tried these solutions :
- Reassemble all cards
- Remove every slot and test it
- Try another power supply
- Reset BIOS with battery
- Also clear CMOS with jumper
- Reassemble Power and reset buttons cable

Now when I connect power cable, It will turn on automatically and spamming restart without any alarm ( beeps ) and monitor doesn't show anything.
Additionally LEDs of PS2 keyboard will turn on in 4 seconds while which means that the computer spamming restart without showing motherboard screen and monitor led turning off and on every secounds.

 

[Matt Dobe]

Sound like a faulty motherboard.

How old is the build and what are you system specs?

 

[tiny voices]

Sounds like it could be a junk PSU.

 

[boosted1g]

If old and replacement power supply has the result then the motherboard is likely the culprit.
It is possible the power supply took out the motherboard though.


What is your system specs (and tell me the whole model number, saying 600w psu and 8gb of ram does not tell me much)

 

[Ironsounds]

Hello... Can you test the " MEMORY" and any other parts in another computer to help you narrow down the list?

 

[FariborZ Baghaei]

Asus P23 Motherboard
1 Gig Ram DDR3
Its about 6 years ago and intel CPU Dual Core
also as I Said i tried another powersupply and it didn't work as well which means we shouldn't think about power supply!

 

[FariborZ Baghaei]

I just tested New memory as well it doesn't work ! any idea?