PC shuts down without a reason even during light usage

[Jumperone]

Hi,
my pc started to shut down randomly not only while playing heavy games but also while just browsing net. For example i could play yesterday GTAV for 2 hours with no problems but today after watching movie on youtube after 5 minutes pc died. It shuts down and after ~2 seconds power on back. I thought that my psu might be trouble but it shuts also while browsing internet so i don't know what's wrong.

Temperatures are okay imo (screenshot took after playing GTAV for 50mins):

https://i.imgur.com/BKtuHf3.jpg

Specs:
Gigabyte B85M-D3H
i5-4460
Asus R9 270
2x2GB Exceleram LP E30106A 1333, 2x2GB Kingston 1333
Western Digital WDC WD50 00AADS-00S9B
Seagate 250GB ST3250310AS
Corsair VS 450
W10 Pro

 

[jankerson]

Sounds like the PSU is getting ready to die.

Try running Unigine Valley and see if it shuts down.

 

[artk2219]

Sounds like the PSU is getting ready to die.

Try running Unigine Valley and see if it shuts down.

Seconded, do you have a PSU you could swap out to test with?

 

[Jumperone]

Passed this benchmark with no issues

@up
unfortunately i don't have any to swap

 

[marksavio]

heres a checklist to guide you on your troubleshooting

• 
  ■overclocking -- try resetting back to stock speeds
  ■overheating -- check temps in your hardware
  ■ram -- do a memtest
  ■powersupply -- try to check on it

 

[Jumperone]

heres a checklist to guide you on your troubleshooting

• 
  ■overclocking -- try resetting back to stock speeds
  ■overheating -- check temps in your hardware
  ■ram -- do a memtest
  ■powersupply -- try to check on it

- i can't even overclock cpu/gpu (locked)
- temps are shown on screenshot at the top, i think they are okay
- i passed memtest few times, also tried to run only 2 sticks

 

[jankerson]

Passed this benchmark with no issues

@up
unfortunately i don't have any to swap

Run it for an hour and see what happens.

 

[Jumperone]

Passed this benchmark with no issues

@up
unfortunately i don't have any to swap

Run it for an hour and see what happens.

Passed 60mins also without problems, but.. I launched power supply test in OCCT and it dies in less than minute.
Corsair has 3 year warranty right? I checked and there is 1 week remaining till 3 year from buying.

 

[jankerson]

Passed this benchmark with no issues

@up
unfortunately i don't have any to swap

Run it for an hour and see what happens.

Passed 60mins also without problems, but.. I launched power supply test in OCCT and it dies in less than minute.
Corsair has 3 year warranty right? I checked and there is 1 week remaining till 3 year from buying.

You can try and RMA it.