http://support.microsoft.com/default...b;EN-US;310994
here is the link I found at the microsoft website which I am going to try today. it gives you the download for the boot disk. I am not technical so I hope I can figure this out...you may want to try it, I saw an earlier post with the same problem and same remedy...i guess its better than reformatting so I am going to try it. Do you know what caused your problem..I think I do and I am pretty mad about it. I was loading some software for the new sony digital camera that came with it for editing pictures and it said that it needed to change the winsaspi file. then it said that some computerers may need this file, but did not indicate you would not be able to start your computer back up if yours did! I have gone to the sony and pixelar website and there is no mention of this problem! I am really mad, and not sure what to do next. All I did was follow there instructions which did not say to make a back up of the file. Since I am not technical I wouldn't have realized there message meant make a backup, I don't even know where this file is located or what it is used for. ok enough ranting I'll let you know how I do if you're interested, let me know if you do the same.