Computer goes into power save mode like it crashed

[haromass]

Sorry if this is the wrong section. Trying fix a issue on a friends PC because every time he boots up and messes around or let's it sit idle(power saver and sleep is disabled) for about 20 minutes or so it will sometimes will freeze and the screen will go black or if he opens a game or try to install stuff (I tried to install origin update and it went black couple seconds after it started) it'll freeze and go black. So to me this sounds like a GPU failure or a motherboard failure. I did a memory diagnostic and did memtest86 usb and both came up clean. Used HWmonitor and HWinfo. If anyone can recommend another test I can run it'd be much appreciated.

HWmonitor:

2nd HWmonitor:

HWiNFO32 Report(HTML file but it wont display it as a html file so you have to download it):
http://www.mediafire.com/file/wcoghpps188za4s/DESKTOP-1EEEOQM.HTML

This is a Temp Log from HWinfo(its a excel file):
http://www.mediafire.com/file/i5lofdd4quchu1m/temp+log.CSV

Specs of his PC:

Operating System
Windows 10 Pro 64-bit

CPU
Intel Core 2 Extreme QX6850 @ 3.00GHz 58 °C
Kentsfield 65nm Technology

RAM
4.00GB Dual-Channel DDR2 @ 333MHz (5-5-5-15)

Motherboard
Dell Inc 0PP150 (Socket 775) 68 °C

Graphics
DELL ST2010 (1600x900@60Hz)
2047MB NVIDIA GeForce GTX 550 Ti (EVGA) 44 °C

Storage
931GB Western Digital WDC WD10 EZEX-00BN5A0 SCSI Disk Device (SATA) 28 °C

Optical Drives
HL-DT-ST DVD+-RW GSA-H73N SCSI CdRom Device
PBDS CDRWDVD DH-48C2S SCSI CdRom Device

Audio
High Definition Audio Device

 

[Ketchup]

Let it sit idle for a few minutes and see what HWMonitor shows as the low for CPU 0. 54 is very high for an idle temp. 67 isn't terrible, but it's pretty high considering that core was only up to a 81% load. I know Dells are pretty passive with their cooling, but that computer may just need a good dusting if he hasn't in a while.

Is this a pretty good representation of the inside?

Also, if it hasn't been swapped, the stock power supply has been running a very power-hungry CPU for about 9 years. It may be time for a replacement.

 

[RLGL]

If that thing is 9 years old, don't waste your time. UPDATE

 

[haromass]

Let it sit idle for a few minutes and see what HWMonitor shows as the low for CPU 0. 54 is very high for an idle temp. 67 isn't terrible, but it's pretty high considering that core was only up to a 81% load. I know Dells are pretty passive with their cooling, but that computer may just need a good dusting if he hasn't in a while.

Is this a pretty good representation of the inside?

Also, if it hasn't been swapped, the stock power supply has been running a very power-hungry CPU for about 9 years. It may be time for a replacement.

That's actually what it looks like. So you think he should try replacing the PSU correct? Also the info or temps are all while it was idle so those temps are as low as they went. But why would it crash like that just from updating origin, that's the thing I don't understand. Not to mention there was barely any dust but I did clean what I saw.

 

[haromass]

If that thing is 9 years old, don't waste your time. UPDATE

I don't know how old it is. He said he got it as a gift.

 

[Ketchup]

How long has he had it? Has it always done this? I would suggested trying to get a power supply locally and see if that's the culprit first.

 

[haromass]

How long has he had it? Has it always done this? I would suggested trying to get a power supply locally and see if that's the culprit first.

He got it as a gift so I don't know how old that PC is and no it hasn't done that always. I'll tell him to try a new PSU.