my comp keeps shutting off

[Guest]

when i use my comp it shuts off by itself sometimes it takes an hour
sometimes 12 hours and sometimes it will shut off in like 20 minutes i cant
figure out whats wrong can somebody help if anyone can help me email me at
(e-mail address removed)

 

[Grim Reaper]

Do you run off batteries or a mains supply adaptor??
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The Grim Reaper