This issue is now well known. If you can't get a XP compliant BIOS then you need to run the old OS until you replace the motherboard.
Microsoft has NO PLANS to "workaround" this issue. And owners that manage to do so are usually crashing on a daily basis.
In closing, if you had provided the model number of the machine, I would have looked, but since you didn't, I'll tell you to look for it at http://www.hp.com
I have an HP with ME, version 4.9.3000, BIOS version EPP version 9.00, 511 MB Physical mem., 2 GB virtual. Halfway through XP install screen freezes saying- BIOS not fully ACPI compliant. Go to hardware-update.com for updated BIOS or turn off ACPI mode during text mode setup - press F7 when prompted to install storage drivers. Hardware-update did me no good and the prompt to install storage drivers never came. HELP!