My PC randomly shuts down and restarts

I would install an app like Crystal Disk Info or HD Sentinel to monitor the drive health and temperature.

spunk said:

Did you ever replace the HDD?
A computer that restarts on it's own is usually overheating. Make sure there is no dust inside the case and that all fans are spinning and are not obstructed by any wires. Boot into Setup (Bios) and go to PC Health or some such and check the temperatures. You may need to reapply Thermal Paste between the Heat Sync and the Processor.

The same issue has brought me to this forum and I do intend to get it solved here!! I have done it all windows logs review, total system cleaning, installing "Open Hardware Monitor" for on the fly temperature checking. logging everything that I do on the pc wit an actual notepad and pencil.

I have concluded that "CPU temperature" to be the culprit. restarting at 80+ degrees Celsius and over.
I can do general browsing without a problem until I play a video on twitch or YouTube etc... temp.. restart.

Funny thing is that on booting into "safe mode" where there is no temp monitoring except for the HDD
I don't have the restarting problem. However safe mode disables "sound" looking for a fix here

I'm guilty of cleaning both the CPU and GPU, removing the "thermal bond" & not reapplying thermal paste.

[Conclusion] Apply new thermal paste for failsafe overheating concerns. Check system in safe mode.
Try running a system temperature monitoring software. Then maybe "sfc /scannow" and DISM

Great news for all with this very distressing problem. After having tried every/most suggestions in this and other forums from clean boot to replacing HDDs. I simply and carefully updated the System Firmware via the BIOS. Get your motherboard specs, visit the manufacture's website, download relevant update files to a flash drive and update from the BIOS. Yes that simple and complex. My PC went from designated for the PG graveyard to a fully functional part of my life once again. Success by persistence.

Empyreal said:

Great news for all with this very distressing problem. After having tried every/most suggestions in this and other forums from clean boot to replacing HDDs. I simply and carefully updated the System Firmware via the BIOS. Get your motherboard specs, visit the manufacture's website, download relevant update files to a flash drive and update from the BIOS. Yes that simple and complex. My PC went from designated for the PG graveyard to a fully functional part of my life once again. Success by persistence.

Helpful info.

Are notifications made about Firmware updates or is it solely the user responsibility to check ?

csun said:

Helpful info.

Are notifications made about Firmware updates or is it solely the user responsibility to check ?

There wasn't any notification about Firmware updates for me anywhere, It was my last resort for unstable system.
I took the initiative after seeing a random YouTube post on my mobile phone asking "Why Update your BIOS"
and the advantages seem to overly support updating, and the process was really simple. "Improve Reliability"
p.s. some of my updates were dated 2015 for my 8 years plus old system