Hi, hope by now you have fixed this problem but something i have found when windows is not functioning in some systems, is IF your system BIOS has under "powermanagment" or something of the sort, you will find information os "ACPI management(or something similar.)" IF you have the option to disable this, some do some dont, try to disable it. It is basically as i get it an intel powermanagement feature meant to replace APM. for some reason i have found in some systems that when this is enabled my linux has no problems(installing), though anything that i try to boot ie;server 2k3 , XP does not see a drive. says the same error yours does. try to disable this until the windows is fixed, then after you repair the windows, and restart go back to bios and reenable it. hope that helps...