PC restarts intermittently while power supply is on but computer is in shutdown state

MrDevilex94

Commendable
Mar 14, 2016
2
0
1,510
Okay so since some time my PC is behaving weird.
Like after i pressed shutdown button from start menu, the PC shuts down. Lights and fans inside the cabinet get off and now full PC is in off state . But the power is being supplied through the socket to SMPS
Out of no where the PC might get start booting the PC. I used word might because it is not guarenteed. It might start it might not.

Similarly if i put my PC on Sleep state. At first it will get into Sleep but like if i come back after 10-15 mins it is already out of Sleep state

So what are the culprits here? and what could have caused it?
My guess is capacitor in SMPS or maybe motherboard fault
 

MrDevilex94

Commendable
Mar 14, 2016
2
0
1,510


Sorry forgot to mention about my PC
Windows 10
i3 4150
Gtx 960 msi 2gd5t
corsair vs450
4GBx2 G.Skill Sniper
1TB Western Digital 7200rpm
Gigabyte GA-H97M-D3H