I have a couple year old lappy...got it cheap, beefed it up, loaded W7 64bit.....and BIAB 2012.
TUrion 64 TL-58 chip. 4gbRam, Tascam US-122mkII

I had nuttin but troubles. I got the idea that W7 32 would be better, and it is. Much. Matter of fact, BIAB loads FASTER...go figure. GOt the crackles out, drivers are behaving BETTER than in the 64 load (lower latency).

So yay.

Just in case anybody is doinkin' around .... 32 is better on older boxes sometimes.