Use the following crack from GameCopyWorld:
The Sims 2 v1.0 [MULTI]No-DVD/FIXED EXE (Works 100%)
NOTE: It is a BACKUP-CD crack, so you have to put CD1 in the CD-/DVD-DRIVE!!!
The other cracks, which you find on GCW or MegaGames do NOT work correctly!
MontyBurns1985
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P.S. Greetings to Monty Burns!