Question machine randomly going into shutdown,

[Mike2009]

As far as i know this is not hardware related so trying here first ,,,, My pc (a older dell optiplex 990 i5 2400, 16gm ddr31333mhz, GTX1060 3gb seems to have developed a bug where I can be doing anything whether game or just looking at youtube etc ,, the shutdown screen pops up forces programs to close then ,,, shutdowns,, I can stop it if Im quick enough then it wont do it again for a while or it will do it right after , it began a few days ago ,, and the only suspect i can find after doing numerous virus and malware scans finding nothing, was a mmc.exe appcrash that seems to be with each event ,,di d a SFC scan it did find some issues but even after fixing them ,, it still persists to do the same thing . i checked my remote access stuff in case and thats fine, I have not done a in place thing yet because Im hesitant about doing that until I eliminate all other options

 

[kerberos_20]

try to run:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
then run sfc /scannow again

 

[Mike2009]

DISM didnt recognize those as options so I am at the moment trying a system restore to see if that resolved it ,

 

[Mike2009]

it seems the issue is more complicated , I shut my pc down before bed and its turned itself on while i was asleep I have checked that power on lan is disabled , scheduled poweron task was disabled as well so this may be beyond a windows issue but system restore seemed to have fixed it for a day or two but it has returned getting random event 1074 shutdowns ive looked for associated applications timing with this event and saw nothing unusual. excluding the 1074 event itself.

 

[Mike2009]

update could be a faulty power button . changed the what power buttons do to sleep and it wnt to sleep randomly still testing but could be the power button if so i will post a thread move to where applicable request and mark it solved .

 

[kerberos_20]

wakeup during night is normal windows feature (windows update schedule)
u can follow this guide to disable it

Prevent & Disable Windows Update from Waking Up PC System - Tech Journey

In Windows, Automatic Updates and/or Windows Update can automatically wake the PC up from sleep, hybrid sleep, hibernate […]

techjourney.net

 

[Mike2009]

its definitely not a windows issue ,, I put in a new power supply today and it was still doin the same thing so far disconnecting my power switch from the motherboard seems to work i have a new switch coming in so i think this thread can be closed and moved now as its not a windows issue.