Okay, so here's the scoop: sometime early this summer, the power supply went poopy on our 3 year old gateway desktop running xp home. Basic system, nothing fancy or added extra except my husband's nvidia graphics card. anyway, got a new power supply, got everything hooked up, and am getting nothing on the screen except for that stupid monitor self-test message that tells me the monitor is fine, check the power cable yadda yadda. monitor is fine, i hooked it up to another computer and it worked. when i turn on the computer, everything turns on, runs nice and quiet and smooth like you think it should, but NOTHING shows up on the monitor. No error beeps when i boot it up. i've tried hooking the monitor up to the graphics card port, to the regular monitor port, still nothing. any suggestions?