what makes my computer restart by it self. thank you P.E.
You have something that is crashing - and the system's 'automatically
restart' is cutting in. Turn this off: in Control Panel - System -
Advanced, click Settings in the Startup and Recovery section. There
uncheck 'automatically restart'. You can also usefully change the
'write debugging information' to (none) unless you are actively needing
a dump for debugging something, or to 'minidump' if you are getting
errors that you wish to report on to Microsoft.
You may now get a Blue screen failure instead, but at least will get
some guidance as to what is happening. If, as is likely, it is trouble
with a driver, the bottom line of the screen will have a reference to
something.sys - look for that file in windows\zsystem32\drivers, and
right click it; Properties and the Version page should indicate what it
is for so you can look for an updated version from the makers