Lenovo T60 laptop. Sym ptoms: lost NAV mouse and external mouse, USB connectivity. Error: Unmountable Boot Volume Stop: 0x000000ED (0x86765c98,0xCoooo14F, 0x00000000, 0x00000000). The laptop boots up and allows me to log in. All applications can only be accessed via the Windows application button. Then using shortcut keys to navigate in the applications. Tried to do system restore from Windows, however, I could not select a back rev date. Reloaded the NAV driver and USB drivers. Issue still remains. Ran BIOS hard disk diagnostics, results found no errors. I don't have a XP install CD as I have see in the searches on this site. Any additional steps that I could take?