I got this nVidia GeForce4 MX420 PCI video card installed right now and its all right. But yesterday I installed the drivers for it and it went crazy! First, videocard was not sending signal to the monitor. Then, computer booted up ok but monitor began turning off/on. I turned off the pc, uninstalled the videocard and its drivers. Installed the card again without drivers and everything was fine! The problem is I can't play games because Windows does not know what kind of videocard its using.Please help! :)Thanks In Advance-ZorugelionPC Specs: OS: Windows XP Pro Edition (No Service Pack) CPU: Intel Celeron @ 1.10Ghz RAM: PC133 255mb SDRAM Mainboard: Biostar M6VLQ