Windows 7 getting restarted automatically

after every 20 min to 30 min my system is getting restart..
how can i fix it plz give me solution
thank u...
2 answers Last reply
More about windows restarted automatically
  1. Try booting into the Safe mode (F8).
    Does it have the same symptom in the Safe mode?
  2. Do you have white lettering in the lower-right corner of your desktop that shows the Windows version?

    If so, you have the Windows 7 Release Candidate. At the start of March it started automatically shutting down every hour as a warning that it will soon expire. If that's the version you have, you need to buy and install the final release version.
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