Screen bllank computer still running

I am in the middle of doing thing on my computer running Autocad, suddenly the command is freezed, few second later the screen went blank. The computer seen still running. I can not do anything except press the reset button and start computer again. I has done to me quite number of time. I am sick of it and desperately need HELP from anyone expert out there. Please help.
many thanks
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More about screen bllank computer running
  1. Your Graphics card maybe damaged...
  2. does this always and only happen with autocad?
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