Windows 10: Pc randomly turning off

My pc randomly shut off and my bitdefender has been telling me that I have unwanted malware or something and it hasn’t usually been shutting off and if it did randomly it would come up on the put in my pin screen and everything is fine but this time it shut off it’s asking me to re-add my Microsoft account and sign in and my monitor gave me a message before it shut off about something like “virus unable to be cleaned” or something it was only there for a sec but idk if I should just sign back in or what to do.

:)

 

Pc problem, randomly doesn't turn on sometimes.

"
Fast startup is a feature in Windows that helps your computer start faster. You can use the following steps to enable or disable fast startup.

• Type Control Panel in the search box.
• Click Control Panel.
• Click Power Options.
• Click Choose what the power buttons do.
• Click Change settings that are currently unavailable.
• Scroll down to Shutdown settings and uncheck Turn on fast startup.
• Click Save changes."

 

Pc problem, randomly doesn't turn on sometimes.

I turned it off i'll report back if problem still persists. Do you guys have any other ideas as well, just in case this doesn't work..


EDIT: sorry for double post

 

PC Build Steps

Ok just because I like steps i am going to create some steps. Please give me the stamp of approval/disapproval

• Install system in case
  • Remember to connect SSD and optical to same SATA ports on motherboard
• Turn on PC
• setup HDD
• run blend test in prime95 for 30-60 min
  • run realtemp at the same time

• While in Prime95 test
  • if CPU goes above 70c in RealTemp, I have a leaky CPU
  • if my system locks up or blue screens, there is an instability in the system somewhere
  • if my system does not lock up or blue screen, my CPU is not damaged and I am in the clear!

What do you guys think??