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Hi, of late, my windows 7 enterprise has been freezing up for no particular reason. i have been using this computer for some time now with no problem, until about a week or so ago when i first detected that some programs were not running properly. how it typically goes is this: first, a particular program would go into 'not responding' mode. i have noticed this first culprit program is almost always ms office or adobe reader. i would then try to close this program through task manager, which somehow is not able to close it. i have tried using other applications to force close stubborn programs like ProcessKO and so on, but none works. this freezing would then extend to other applications, until finally even my chrome browser hangs. that's when i lose all response from the system, and have to press the power button for 7s to force shutdown. i have tried a few trouble-shooting techniques: i used windows updates to download and install all the updates available (even those non-critical ones). this seemed to help somewhat, till the system crashed again just now. i ran AVG anti-virus to see if i had a virus, then i ran windows defender too. these turned up nothing suspicious. i am not sure what else i can do to pinpoint the reason for all these frustrating hang-ups. any ideas from anyone? thanks.