My computer kept freezing on "No Responding". It became useless.
The reason was that two programs were conflicting with each other. KeyScrambler and Spyshelter are both anti-keylogger programs and if used together result in a screen freeze, with the only way out is to crash the set on the power button. But it all starts again on reboot.
I disabled KeyScrambler and it is now perfect.
Your problem ? Take a look at any recent changes or additions relative to when the problem first started. Any recently added program is most likely the cause. You must then find out what it is conflicting with or simply delete the latest addition.
John