I understand the boot files on a ST412X may be .cab files. During boot the files must be opened by ?bios? first. I have a ST4121 that booted until I messed up installing a wireless card. Now the tablet usually boots to "operating system not found" . Occasionally it does boot to Windows XP. During these times, I try to repair ?XP? but the tablet usually slows way down and then bsd's to reboot. Does any one have the instructions to manually open the .cab files?