In most cases, all recent versions of Windows use Ctrl+Alt+Del to bring up the Tasm Manager. You can't usually use that key combo to restart your PC. When you did that, was any application highlighted as 'not responding?' If so, that is where you should start looking for problems. Otherwise, try to post additional information for us here. -a.
Answers & Comments
In most cases, all recent versions of Windows use Ctrl+Alt+Del to bring up the Tasm Manager. You can't usually use that key combo to restart your PC.
When you did that, was any application highlighted as 'not responding?' If so, that is where you should start looking for problems.
Otherwise, try to post additional information for us here.
-a.