em19118
1 Copper

Inspiron 600m - blank screen

I have a Dell Inspiron 600m running Windows XP.  When I boot up everything is fine for a few minutes, but eventually (if I'm on wall power) the screen will go blank after a few minutes.  The computer itself still runs normally, and I can still use it with an external monitor.  If I make the computer hibernate, upon waking the screen will come on again, but then go blank again after a couple minutes.  The screen only goes blank if the computer is plugged in, but once it has gone blank unplugging does not bring it back.  If it is on battery after booting or waking, then the screen stays on for the life of the battery, unless I plug it back in, in which case it will go blank a few minutes after plugging in.

Anybody have any idea about what is going on here?  Is there anything I can do to remedy this problem?

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