I have a Dell Vostro 200 running Windows XP. I bought a new keyboard and mouse but when it loads up the keyboard and mouse don't work. I tried connecting it to the internet so it could obtain the drivers automatically but that didn't work. I then tried to start in safe mode they still didn't work. I checked the BIOS and the USB was enabled. I ran Hiren's boot CD and both the mouse and keyboard work on the Hiren's mini XP OS. I'm stumped can anyone help me please.