Hard drive full!!

[2436]

hello, my name is Derek, and i'm having some problems with my hard drive(c).
It is full, and no matter what i delete it still shows it is full and i get the low disk space warning. i have restarted my computer, and it starts up with about 170mb of space, then within about 15 mins, dwindles down to 0. i have 3 user accounts on it, and i deleted one, but after a restart, it was back. also the programs i deleted with add/remove came back after i restarted my pc. some of the files i have tried to delete said it could not be deleted because it was corrupt and unreadable.
 i thought it might be a bad sector on my disk. is that a possibility? i have tried to run Chkdsk, but it doesn't seem to do anything.

my disk capacity is 41.3gb

[Broni]

170MB is practically ZERO. Couple of temporary files created, and the space is gone.
Windows needs at least 15% of a free space - over 6GB in your case.
With so low free space, next thing, you know, your computer wont' boot at all.