I've been using the standard windows uninstaller to uninstall AC before each reinstallation attempt (I've done it twice). I've never tried revo but I've noticed that there is a free standard version and a professional version. Which one are you recommending? Does it matter?
When we first tried installing and uninstalling AC, we also used the Windows uninstaller... but problems persisted. Others suggested Revo, which I tried, and that was totally successful. I've been using the free version, and haven't had problems with it (on many other computers too). Revo has 4 levels of "cleaning"... I've always selected the "deepest" cleaning. I haven't tried the pro version.