The original one, bought in 2007, was SP2 and applying SP3 always trashes the HD. It won't boot. I was one of many thousands of people whose machines got trashed by SP3. In the end I restored from an old Trueimage backup. I tried SP3 once more, a year later, and it trashed it again.
The second one, bought a few months ago, was fine with SP3.
The two machines are identical except the 1st one has the GPRS/3G radio (a Sierra chip; originally locked to Vodafone) and possibly they have different BIOS versions.
Both have been upgraded with an 80GB Intel SSD.
Both have identical application config.
I reckon it is some software misconfiguration.
What would happen if I simply copied (using Trueimage) the 2nd machine's HD to the 1st one?
Obviously XP is going to complain on the 1st (target) one because the hardware has changed. I am sure XP allows a HD change, but this will be a whole motherboard change




