Hi,

My dimension 4600 is locked in sleep mode (Win XP), and I cannot get it out.  I've tried restarting several times.  The ABCD lights on the back are all on, and green.  I know that the computer turns on, and as soon as it comes on, the monitor drops into sleep mode.  But, the monitor works fine when hooked up to my laptop, and the self-test for the monitor works fine as well. 

I also know that after the computer comes on, I can hit Alt-F4, then press "u" (for shUt down), and the computer will shut down normally (with shut down sounds).  But I cannot see anything.

If anyone can help, I'd be very much appreciative.  Thanks.

sb01