CPU Crashes randomly (Like lost power)

[Starrry_]

HI all, my cpu crashes randomly ive monitored the degree inside via MSI command center. 42 deg also crash. It crashes and will be like the moment before i press the power on button. So everything is off.

At the windows error recovery page, keyboard does not work too.
Please help.

PSU just RMA 3 months back. I changed the power sockets im using. Including the extenders. It just crashes less frequently...

 

[jtjt00]

TS, list down all parts of your rig like those on the right -->

 

[Starrry_]

TS, list down all parts of your rig like those on the right -->

OS: Win7 pro 64bit
intel i5 4670k
pus crosair rm 650
gpu evga gtx 780
mobo msi z87-g45
ram avexir core ddr3 8gb x 2
hdd samsung ssd pro + WD cavier black

 

[radiobox]

Have u did a ram stress test?

 

[Starrry_]

Have u did a ram stress test?

how do i do that? Anw if MOBO is spoilt, RMA i have to dismantle myself or they will do it for me?

 

[jtjt00]

how do i do that? Anw if MOBO is spoilt, RMA i have to dismantle myself or they will do it for me?

memtest86 ... download and run

 

[Starrry_]

memtest86 ... download and run

it crashes before the full test is done. And keyboard doesnt work till after windows starting after crash.