Black screen death a few minutes after working normally

I've looked at other threads regarding the black-screen issue but my problem seems a little different.

Since I installed Windows 10 on my HP Pavilion laptop it boots up OK and I can get as far as my desktop. The taskbar settles in nicely and all seems fine.
But if I open anyapplication and work on it for a few minutes the taskbar and everything else suddenly disappears. I generally can't close whatever programme I'm in but if I do manage to then instead of a desktop I have a blank black screen. Moving the cursor around is possible but there is literally nothing to open.
My only option is to ctrl/alt/delete for Task Manager and then shut down or restart. On restart, the same thing happens. It starts, I get to the desktop, everything looks normal, I open something then black-screen-death.

I am not using two screens.
Anyone know a fix?
Thanks
QG

I'm just taking a guess here but I doubt its the cause . It sound like you have a setting that is set to turn off. Do things again but this time count the minutes that goes by before the black screen come on and afterwards restart the computer and do it again , notice whether the same minutes that goes by is the same from the first time . This way it would really sound like a setting is set at the possible cause . I will search further with your problem and see if anyone else might have the same issues and fix. Have a look at the sites below and see if that will help ... Fast boot up problems

Black screen with mouse pointer after cold boot Windows 10 Technical - Microsoft Community

try ctrl/alt/delete > taskmanager > file menu > new task > "C:Windowsexplorer.exe"

right click on start key > cmd (admin) copy &past :dism /online /cleanup-image /restorehealth & hit enter

sfconline - Microsoft Community

Thanks Sn00ker. I'll give it a go when I get back home later this week. QG

QUOTE=sn00ker;346788]I'm just taking a guess here but I doubt its the cause . It sound like you have a setting that is set to turn off. Do things again but this time count the minutes that goes by before the black screen come on and afterwards restart the computer and do it again , notice whether the same minutes that goes by is the same from the first time . This way it would really sound like a setting is set at the possible cause . I will search further with your problem and see if anyone else might have the same issues and fix. Have a look at the sites below and see if that will help ... Fast boot up problems

Black screen with mouse pointer after cold boot Windows 10 Technical - Microsoft Community[/QUOTE]

Thanks Mohamed. I'll give it a go when I get back home later this week. QG

right click on start key > cmd (admin) copy &past :dism /online /cleanup-image /restorehealth & hit enter