Try to get the boot logging enabled from the boot menu. This should generate
a log file in the root of the boot partition. Include the file in your
Microsoft Beta Client bug report.
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*It might be helpful to report full hardware config to MS and also here (if
you want). Reporting here can be done easiest by getting this program "PCI"
or "PCI32":
http://members.datafast.net.au/~dft0802/downloads.htm
You also need to copy this file:
http://members.datafast.net.au/~dft0802/downloads/pcidevs.txt
To the same location as you have the PCI.exe or PCI32.exe. It has updated
device definitions.
If you still have installer or can install XP on the computer, run the
PCI32.exe like this:
PCI32.exe > devices.txt
now open devices.txt with notepad and copy paste the content here in your
reply.
If you don't have and can't get XP back there, get the DOS version on a disk
or bootable USB stick that uses DOS. Then do PCI.EXE > devices.txt and open
this file where you have Internet access.
You can also try enabling boot logging from the boot menu advanced options
and this should make a .log file in root of that drive.
If possible, I also recommend installing the Beta Client on that computer
and submitting a bug including the boot log if you got such made.