I had Vistas 64 bit operating system,Iwas installing itunes, and somehow my system ended up being 32bits.I have spent hrs., and days trying to convert it back to 64 bit. I give up.It has slowed my cumputer in half or more. Its slower than a old dail up unit. Help.
There is no way that installing iTunes or any other program will make a 64 bit OS turn into 32 bit. Explain why you think this is the case. It may have installed in a 32 bit program files (the x86 directory) but it's impossible for the system to go from 64 bit to 32 bit without a full re-installation.