threed thi8ngs are sugeestesed..
1bad powerr suply...as in the wattages is overladed by other compontests ...ie cd rom, hd, zip...etc...
2 bad vid card, as in it could have been shorted by the PS and no longer funcitioning to full capacity (catastrophic failure..not this kind but the ohter, cna' think of it cuz i'm a bit durnkd

) anyway, the other kind where it workls, but not to ifts full extent...
or
3bad monitor...yo0u say you are using LCD which are known for touch screen failure...which is the liquid crystals can rupture and casue problems in the screen itself, causing the monitor to resort to shutting down or going into a power safe mode...
first, i would test another PS...not many have that option but if you have a spare PS, tyr that....or second try another vid card but once again, not bany have that option...and third....new monitor which again

, not mayn have the toption...
I highly doubt its the PS cuz going into powersafe mode is not a sign of a bad PS and it wouldn't giev you the message, it would just cut out...so I would have to say mad monitor or vid card...good luck Joe!