PC restarting every 5 minute

Setarrif00

Commendable
Jul 2, 2016
13
0
1,510
Everything in my computer si new, the HDD, the gpu, everything except the psu,firstly it restarted while playing games(not even graphics intensive ones) and now it restarts even when idle. The temperatures are normal, the windows was recently clean installed , the gpu,cpu and RAM memeory passed the testing programs. This problem and me share a history of hair pulling and despair, I beg you, could you help?
 

Setarrif00

Commendable
Jul 2, 2016
13
0
1,510
Processor AMD Phenom(tm) II X3 740 Processor

Video Card ATI Radeon HD 3870

RAM 8.0 GB 1600 mhz

Operating System Microsoft Windows 8.1 Professional Edition (build 9600), 64-bit
PSU : Corsair 650 W
Motherboard : Asus M5A97 R2.0
HDD : WD blue 1 TB
 

dirtbikeguy55

Honorable
Jan 9, 2014
58
0
10,660


Do you have another power supply that you could try because you said that you have had the issue before so it might be your power supply.