You can buy a Windows XP media cd in PC world for around 350.You may be charged more for Professional, if you purchased the PC recently in PC world, check the paper work / order to see if it's listed, they may have even charged you for it so pop in with your receipt and tell them you were left short the media software, this is certainly one of the items I would always make sure i recieved when investing in hardware, Dell media won't work on any other hardware other than Dell...there is a code written in to the bios so if you try useing Dell Media (XP reinstallation media) it will recognise that it ain't Dell hardware and stop.If there is a hardware fault with the video card check to see if you have onboard video if so remove the video card and test to see if it boots up, also what error messages are you getting on or after POST ?