Missing folder

Win95 couldn’t booted up, even under safemode. Using boot up disk and I found some strange situation in the C drive. most of my folders was missing. I opened the “windows” folder and found inside is same what is in C drive. Then the “windows” is just like “unfinishable” when keep on open it. When I check the C properties, the size is undefineable, the figures is keep on changing. Tried before using Norton Disk Doctor but hang up half way. My PC Spec is WIN95, 2.1GBHDD, 48MBRAM. Somebody encounter before? Thank you & appreciated your help.