you can do an upgrade in place of vista to allow it to recognize the difference in cpu's.
this would be similar to repair in XP.
"rjocall" <> wrote in message news:5CB6A4E1-66B2-40D4-9A35-...
I have 3 H/D 's XP on one , Vista 32 on one and vista 64bit on the other .
My dual core AMD cpu stopped working (? overheating as the fan stopped !!!)
so as a temp measure I put back the old AMD Athlon 64 3700+ CPU . Now the
vista h/d's will not boot ...can I do anything about this and why is this
happening? .....ps the xp h/d boots ok .