Need advice please. I have recently used the windows 10 repair from tweaking.com - brilliant, my PC is faster and less cumbersome, however, since doing so my PC now locks or freezes after an hour's use or so. I have a moveable cursor but whenever I click on an icon the programme does not appear. Crtl, alt, del does not work either, ie, no task manager the only thing I can do is hard start by holding down the on switch. The PC is then OK for a while until the lock up happens again. Any ideas or suggestions would be most welcome - thank you and have a nice day.