Source : Webster's Revised Unabridged Dictionary (1913)

Reinstall \Re`in*stall"\ (-st?l"), v. t. [Pref. re- + install:
   cf. F. r['e]installer.]
   To install again. --Milton.

Source : WordNet®

reinstall
     v : install again; "She reinstalled the the washer after it had
         been repaired"