win XP sp2 keeps on lock up most time can get in ok but no start & clock all lock up,some times click name it try to load no go ,put CD-Rom in boot & do the R key > chkdsk C: /p /r & work ok for one boot, I try Help & /? all I see is to fix is fixboot fixmbr bootcfg /scan ,listsvc is that all I can do? PC die so boot CD go Repair r get com & setup Error System32\catsrv.dll 0x8007007f PS I think I go to new but like if for next time as not take me long to kill it off.