Hi, before this problem happened, I was fixing another error I had with booting up. Ever since I tried to install a new version of Norton Systemworks with GoBack and turn on my computer, an error would come up saying that "autochk program not found, skipping autochk". After that my computer would restart and repeat the same process in a never ending cycle. I then stumbled upon a solution in which I use PTEdit to change the partition types because my hard drive was being hidden. I used PTEdit from a boot disk to change the partition type of my drive because apparently it was being hidden and thus, autochk couldn't be found. I have two drives, a C drive and a D drive. I had to change both drives to type x07(a bootable type) because if i only changed the c drive to the proper type, i would still receive the error. Now that I was able to boot up properly, my d drive has disappeared. All programs and files relating to it are gone and no longer useable. Also, another note, I installer my norton program to my d drive, as well as norton goback. I've read that norton go back can change your partition types, but i can't even uninstall the program because its not shown, as its in the d drive. As I can figure so far, my d drive is being hidden, but i'm not sure how as i changed its type to a type that can be seen. Help is much appreciated, thanks.