one day i restarted my computer and it it couldn't start windows, so i tried to start it in safe mode and it would stop at mup.sys and then just restart. so i tried to reformat by accessing the restore partition on my hard drive but it wouldn'y open. so i tried to install windows with a disk i have used many times on other computers, i downloaded it from mininova it is called superwin aio. it said there was no hard drive when i tried to install windows. so i used a tool on the dist to format my hard drive and it still will not recogonize that my hard drive is there. what can i do? please help me