Toshiba Tecra M7 Tablet PC "fix error wont boot" Questions

error with the hot key and and wont work...it was working earlier this morning...and i need to figure out how to fix it i have rebooted and checked for corputed files and i just dont know what to do..

...error then meaning there is a peroblem with that restoration point that you have selcted have you tried a different restore point? If you did then most probably the system restore program on your ...

...error messages during the start up of your tablet, you can use the recovery mode to reset your tablet to its factory settings, removing all installed applications as well as any data or content. Your ...

...wont boot says windows 32 system file missing or corrupt i dont know how to get it to ny thing except a menu that says try last working config and a few other windows options but nothing works i dont ...