I am having the exact same problem.
I have made a post in the General section, but I thought this was the better place to post.
I want to sell my Acer A150 as my mini 1012 is being delivered tomorrow, so I am trying to put XP back on instead of Windows 7 Ultimate.
No matter what I try I get BSOD (Stop 0x0000007B) at the exact same point everytime. From what I have read on the net it may be something to do with some kind of boot file problem, but I really don't know where to start trying to fix it.
I managed to install Ubuntu without problem as well as Ultimate again, but just cannot get XP back on. I even tried Win 98, thinking that I could then upgrade to XP, but that's a no go due to lack of CD rom support
Any ideas please?