i just bought a brand new hp desktop computer with a HPw1858 LCD monitor screen. i didn't have any problems with restarting it until i installed my new graphics card nevida 8800. but now i have trouble getting the monitor to play. however i've found one solution. if i press source repeatedly..after a certain amount of time i can normally get it to come on. or if the desktop's main power button turns orange i can just tap it once if the computer goes to sleep. but does anyone have any idea how to fix this problem? since it works half the time, but has trouble coming on for the first half?