EVGA x58 Sleep Problem?

I hope this is the correct place to post this... Heres my set-up

EVGA x58 TR
6gb G.Skill 1600
EVGA GTX 275
Intel i7 920 at 2.66
Westinghouse 26 Inch LCD
Windows 7 RC 7100

So I recieved all my parts just the other day and set everything up pretty quick, build went off without a hitch!!! Shortly after I started noticing a problem. I left the room for like 20 mins to walk the dog or something and when I came back in the monitor was off like it was sleeping, so I do the regular and move the mouse and hit some keys, nothing happens...... Reboot the comp, tower comes on.... sounds fine but the monitor wont come on at all. Next I tried upplugging the monitor from the wall and waiting a lil bit... bam, it comes on. Anyways so I turn off all the sleep options in Windows 7, thought it might help. Last nite I turned the comp off before I went to sleep and when I turned it back on this morning the tower fires up but nothing from the monitor again...same thing unplug and plug it back in and it works.... Any ideaS? Monitor Issue? MB Sleep Issue? Windows 7?