5.2 install hangs after menu

[Kathy Quinlan]

I am trying to install FreeBSD5.2 on an Athlon XP 2100+ machine with
512Mb ram and 20gb hdd (5gb partition for FreeBSD)MSI 745 Ultra
motherboard.

If I select any option on the menu, it tries to install and then hangs
saying BTX halted. Even if I use option 3 (safe mode)

If I select option 5 (verbose debug) it gives the following error
message:
ACPI autoload failed - no such file or directory.

Any help is appreciated, as google has turned up nothing :(

Regards,

Kat.

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