I have a Toshiba M50 (Aus) laptop that would boot up ok in XP but after a few seconds of an OK desktop would show the BSOD. I tried restore in safe mode but the calendar would not access any other date so restore was not an option. Tried booting from the supplied boot CD (no important files to keep and wanted a "fresh" start. CD ran but still will NOT boot from HDD at all. CD has ".pqi" file on it and HDD has what appears to be normal WinXP files. Could the boot sector be damaged/missing? How can I restore this? How can I make further checks? What do I do next? I have HDD now in external case on my desktop for formatting (if required). Can I format it and what is the chance of reformatting it in the wrong format (NTFS or FAT) and how do I choose?