lsst week i noticed, that i had 99GB of unallocted. so i extended it to my current HDD.. when i rebooted the computer i had the message 'autochk program not found- skipping AUTOCHECK' and then the computer reboots endlessly. this is a cycle. i have only found one solutiuon on the net and it involved a floppy disk,, which i dont have + i dont think my PC has a drive for it. Here are my specs: Dell Dimension WIndows 7 3GB RAM 2. something GH SATA HD I NEED THIS NOW BECAUSE I HAVE TO DO CORSEWORK ON COMPUTER. PLEASE HELP!!! PLEASE!! thankyo so much!!