well i ahve a dell dimension 3100 desktop it was working fine but yesterday when i was on the computer it just shut off and the power light turns orange when it is supposed to be yellow . I turn it off and on again and it does work but again. it turned off and again the orange light . when i tried to turn it on again i coudlnt i keep getting the orange light and nothing shows up. i dont know what it is wrong with it i think is the powersupply but i dont know need help.

mmm, are you sure you are hitting 'shut down' and not 'hibernate' or 'sleep' sometimes different lights come on for those.

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