So, given that my old password is correct (which I am quite quite certain about), these would be the steps to follow?

1: Deinstalling current bitcoin client
2: Removing all data, blocks, and current wallet.dat
3: Downloading new Bitcoin client
4: Removing wallet.dat new bitcoin client
5: Inserting old wallet.dat in the folder where the new wallet.dat was located
6: Open command: "bitcoin-qt.exe -rescan"
7: Let the client rescan all the blocks and once it is finished, I should be able to make transfers with my old password

Am I correct here on these steps?

Best,

Clochard