Thank's for info, but after dometime that repairings does the black job, computer slowing down and down. Because windows xp register (as other old windows) became biger and biger.
Solutions are few:
Create few disks, in one of them install windows andmake fresh install backup.
For other non-installed files use other disks (not C:\), My documents and others too in other disks (D:\ or smth)
Or use Windows 7
This windows I respect, using on HP laptop, beta version )