System Restore is partitioned off, but it says bad cluster... what's this?

[PowerMan57two]

My comoputer didn't come with system restore disks on cds' HP just partitioned it off on the computer, so say i wanted to do system restore i hit F10 on boot up, and i have done system restore 2 times before, but now when i try to do it. it gives me bad error saying that theres bad cluster and now i can't do anymore systems restore!! whats cluster mean? or bad cluster? i need help bad cause this system restore i use a lot.. i used it lot on my old computer, at least 30 times on my computer.... but on my old computer i had it on cd rom... but anyways can u fix bad clusters, and if so i need help bad!!

my computer is an HP Pavilion 751n

1.8Ghz
256MB RAM (but bought more to bring me up to 512MB Ram)
80GB hard drive

i dunno this helps at all but mine as well list it

[Koffee Bean]

A Cluster is basicly your stuff on your HardDrive. Whtat happenes is that your hard drive is divided up into parts called clusters. Now not all clusters are good, some are curropted (not sure how to spell that) so what the computer manufacturor (not sure on that too) does is map them out to ignore the bad clusters. Now to try and repair and remap a bad cluster, what you must do is go to My Computer, right click your C: drive, hit properties, then flip over to the Tools tab. Once there, go to Error-Checking and click Check Now. I image you're running XP because of your spec's, but if not PM me for more details. Now chose "Scan for and attempt recovery of bad sectors" if it keeps restarting and tells you it can't finish you must boot up into Safe Mode when starting up. To boot into safe mode simply press F7 Iduring start-up, and then chose "Boot into Safe-mode" That should do it for ya, if not PM me. ; )