Hi there I am looking for some help. Last week the motherboard on my pc fried itself, so i had the motherboard and the power supply changed. When we booted the pc up there was a message saying that my windows would fail in three days time because i hadn't put in the system disk, i don't have one, the xp was built into my comp when i bought it. So we phoned microsoft and after a lot of hanging around on the phone were given a command prompt to enter which worked, all systems go. Now though after three days my pc will not boot up, when you switch it on you get a message saying [DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER] the only problem being i don't have a disk. Any suggestions guys

Is the drive seen by the bios at bootup? Odds are when the powersupply and mainboard went it damaged the drive. create a bootdisk [bootdisk.com] and boot up via it. Download via the drive manufacturers web page the drive diagnostics and run them.

I think you are confused. The system disk is the hard disk. I get the impression you are thinking of the windows cd disk. You could get a bootable disk, like ubcd, then run a hard disk check. I think your hard disk has a problem. If you could borrow a Windows cd, you could get to the recovery console & run chkdsk This might fix it. Before posting try google. Backup. Use anti virus software.