Windows 7 - Window7 32bit and 64bit dual boot problem!

ok so I had Windows 7 x64 installed on my PC first. It ran great, and I was very impressed.

So the other day I decided to partition my drive and install Windows 7 32bit as well. The installation went smoothly and 32bit worked just fine.

BUT ever since I installed 32bit my 64bit has slowed down DRASTICALLY! It takes nearly an hour to boot and everything runs slow in it. What is weird is that my processor and RAM are not under heavy load. My RAM (6GB) stays at about 15% and my processors 8 cores (intel core i7) do not go over 5% of load. But everything goes EXTREMELY slow. I tried System Restore and other repair tools on the install disc, but to no avail.

Please help, I don't want to have to format and install again.
thank you

Maybe you have lots of crap on registry and other things.

Why don't you clean it and see if that helps. I remember that when I upgraded from B.7057 to 7100, to enter the log in screen it tooked my computer around 3mins, then I just defrag the disk using Auslogic Disk Defrag and used Ccleaner to erase all the **** it had stored in the registry, believe me, after that it was a new machine.

See if that helps,

Dell XPS M1530
Core 2 Duo 2.4
Nvidia Ge4ce 8600GS.
2GB of RAM