when i try to access the disk gefragmenter and device manager iv'e been getting the error message:- "MMC cannot open the file - this may be because the file does not exist, is not an MMC console, or was createdby a later version of MMC. This may be because you do not have sufficient access rights to the file." Also i cant access System Restore either, when i try i get the following message:- "System Restore is not able to protect your computer. Please restart your computer, and then run System Restore again." I have done this but i continue to get this error message. Wots wrong!!??.