I was given a Tyan mobo, 533mhz cpu. It appeared that the video card was bad. It was an AGP card. I inserted a PCI video card and before it fully boots to Windows I get a message that it doesn't recognize the mouse. Besides the PS2 mouse I tried a USB mouse. None work. Also, it doesn't recognize the keyboard. Could the video card be the problem? Must I use an AGP video card to correct this? I am running Win98.