Windows 10: Computer made various beeps while screen off, then screen turns back on.

I was in my bed, my computer is on, but screens aren't rest mode I thinkThen I hear various beeps I've never heard before, then the screens come back on and nothing else happens.

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Computer beeping

I recently upgraded to Windows 10, and now I find that after sitting for a while, my computer seems to lock up - the screen is black and will not come on, and the computer itself is beeping... Any suggestions as to what may be causing this????

 

No beeps when starting a computer with a black screen

See these links on POST beep codes and troubleshooting:

What is POST?
Computer POST and beep codes
POST troubleshooting steps

 

Computer Beeps and Doesnt Turn on

After my Intel Graphics card was mysteriously disabled, my pc only had a black screen but would still turn on. As told online, I opened up the pc and took out the CMOS for a minute and put it back in, but after putting the screen back on and plugging everything back in, it will beep for a second after i try turning it on and stay as a black screen. I was thinking it might have something to do with the pc case, because it think it doesnt close properly but i did press it down as much we possible, but please give other suggestions