Is using 'Repair' on XP/Vista CD a good idea?

  buel 12:05 16 May 10

Hi, i've helped a friend out by speeding up his laptop as best as i can (with lots of help from the brilliant helpers on here), i was just curious about whether using the 'repair' option on an XP CD i have would benefit this laptop at all? Am i right in thinking that if there are any Windows registry errors that this would fix them?
Sorry for my naiveity!

  Fruit Bat /\0/\ 12:22 16 May 10

you only need to do a repair install if the machine will not boot.

To replace missing or corrupt windows files use

sfc /scannow press OK

To repair registry errors safely use the registry option in CCleaner (safest method) other registry cleaners can be too aggressive and give more problems than they solve

  buel 23:33 17 May 10

Thank you very much for that!!

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