Last evening I started a defrag of the 160 Gb hard drive of my primary computer. This morning, the computer was comotose and nothinhg I could do would kick it into operation. after futzing with it for far too long, I attempted to turn it off. Not even that would work. Finally pulled the plug (success), but now it will not boot. I’ve atttempted fixboot and fixmbr without any improvement. And after years of snipping at people to make regular backups, I haven’t lately. Any help on recovery will be most gratefully accepted.