PC randomly shutting off

[sbrookes916]

For a couple of weeks my computer has been randomly turning off. When it does so everything will shut off (fan etc.) except for the LED on the power button and to reboot it I have to turn it off at the plug, wait a few seconds and restart.
I have been checking the temperatures and that doesn't seem to be the issue and its two years old.
Can anyone please help!

 

[Satan-IR]

Let there be full specs ...

It sounds like a PSU problem.

What is exact brand/model of PSU? Both system and PSU are 2 years old? PSU may be dying.

Can you test it with a multimeter? Or can you get hands on a spare PSU and test the system with it?

Download and run portable version of HWiNFO (free and no installation needed) and check voltages on 3.3, 5 and 12 volt rails through the Sensors tab/button and report them here. Especially the 12 volt.

https://www.hwinfo.com/download.php

You can also download Speccy and check the voltages under Motherboard. This one is free too but needs installation:

http://www.piriform.com/speccy/download?upgrade

 

[sbrookes916]

Let there be full specs ...

It sounds like a PSU problem.

What is exact brand/model of PSU? Both system and PSU are 2 years old? PSU may be dying.

Can you test it with a multimeter? Or can you get hands on a spare PSU and test the system with it?

Download and run portable version of HWiNFO (free and no installation needed) and check voltages on 3.3, 5 and 12 volt rails through the Sensors tab/button and report them here. Especially the 12 volt.

https://www.hwinfo.com/download.php

You can also download Speccy and check the voltages under Motherboard. This one is free too but needs installation:

http://www.piriform.com/speccy/download?upgrade

Specs:
CPU- AMD A8-6600K APU
MoBo- Gigabye ultra durable GA-F2A68HM-HD2
Graphics Card- Radeon R7240
Power Supply- CIT 500W Micro Atx
OS- Windows 10 64-bit

Yes the system and PSU are both 2 yrs old, I made the stupid mistake of buying a pre-built and i have not got anything to test the PC with currently .

Regarding the hwinfo test:
3.3V = 3.324V
5V = 5.100V
12V = 11.880V
Thank you for your help!

 

[Satan-IR]

No problem, glad to help.

Yes as I suspected, that 12 volts rail is not quite up to par, it's nor horrific but it's 11.8 nearly 11.9 (i'm assuming) at idle.

That's probably why it shuts down under load. I would replace that PSU.

I doubt that PSU can provide 500W now as indicated by the lacking 12V rail.

 

[sbrookes916]

Thank you, I will try replacing the PSU

 

[DSzymborski]

Thank you, I will try replacing the PSU

Hopefully with a better quality one. Corsair CXs (the new one that doesn't have the green letters) and SeaSonic 520/620 PSUs are reasonable budget PSUs that tend to be the lowest priced PSUs worth considering.

 

[Satan-IR]

Thanks DSzymborski, I was not sure of OP's budget and preference and didn't know what to offer.

 

[DSzymborski]

Thanks DSzymborski, I was not sure of OP's budget and preference and didn't know what to offer.

Yeah, obviously he can get better ones with a higher budget, but I figured that the least expensive recommendable ones were a good place to start, especially given his rig isn't very power hungry. The 520 SeaSonic is available under $40, so it's usually a safe rec!

 

[Satan-IR]

Thanks DSzymborski, I was not sure of OP's budget and preference and didn't know what to offer.

Yeah, obviously he can get better ones with a higher budget, but I figured that the least expensive recommendable ones were a good place to start, especially given his rig isn't very power hungry. The 520 SeaSonic is available under $40, so it's usually a safe rec!

Yes that's why I'm glad you gave your input. I agree, a good entry level PSU is enough for that rig and it's good value and yes SeaSonics are solid ones.

 

[sbrookes916]

Thank you guys for your recommendations

 

[sbrookes916]

Would something like this be OK or would I need a higher wattage?
https://www.amazon.co.uk/Corsair-CP-9020101-UK-CX450M-Bronze-Certified/dp/B01C3FFOHS/ref=redir_mobile_desktop?_encoding=UTF8&dpID=41ZF9nXla%2BL&dpPl=1&keywords=Corsair%20CX&pi=AC_SX236_SY340_FMwebp_QL65&qid=1509385045&ref=plSrch&ref_=mp_s_a_1_1&sr=8-1

 

[DSzymborski]

Would something like this be OK or would I need a higher wattage?
https://www.amazon.co.uk/Corsair-CP-9020101-UK-CX450M-Bronze-Certified/dp/B01C3FFOHS/ref=redir_mobile_desktop?_encoding=UTF8&dpID=41ZF9nXla%2BL&dpPl=1&keywords=Corsair%20CX&pi=AC_SX236_SY340_FMwebp_QL65&qid=1509385045&ref=plSrch&ref_=mp_s_a_1_1&sr=8-1

For your rig, that would be more than enough. If, however, you plan to do significant upgrades at some point, I'd consider the 550 instead of the 450.