My son's Sony Vaio (Windows Vista) keeps relooping after windows updates..Computer was lost for over a year, so ton of updates..It stops at 28683/98320 C\Registry\Machine\Components\Derived Data..Also have a unexpected I/O error status 0xc00000e9 every now & then. Ive booted w/Ubuntu Live cd, but cannot fix anything with the terminal command prompts..Also cannot run scans from microsoft while booted in Ubuntu..I cannot boot into safe mode or any of the other options (just starts over, relooping again) I can get into BIOS, but still windows will not load.(relooping again).I can every now & then get into F10,(without Ubuntu) it will not accept any commands I type in. (NOEXECUTE=OPTIN) is whats there. I really need to do a chkdsk but cannot find anywhere that will allow me to type this in and it work. I do not have the Sony recovery cds. I have a windows vista start\up for my Gateway, but it doesnt work for this Sony Vaio VGN-AR605E laptop. 4 days now working on this. I would appreciate all help. Thank You very much.