I have a sis 315 video card installed (for about 3 years). everything was working fine until the screen went crazy with distortions of all sorts. Turned off computer (running winxp pro) and rebooted and I can hear it booting up until I reach my logon thru bios and then stops. Notice that when I turn on computer that monitor led will get green and then before I can blink it will go into standby mode and turn amber. I cannot see my bios logon screen or anything and monitor is in standby mode. Figured it was video card and got a new one (apg) and doesn`t change a thing. I turn on computer and it starts to boot CD and Floppy, then stops (I know it is waiting for me to type my code to get past bios, but can`t see it. Any help greatly appreciated.