(In reply to Peter Wu from comment #16) > Ok, do you have any certainty about the earliest= BIOS date where _PR3 is > used? E.g. if the minimum date is lowered to 2014 without checking for= _PR3, > would it be likely to miss out some models? It's always used if it's available. I think 2014 should be ok (should catch most of the early ones), but I'll check with our windows architects. I sus= pect it will come down to OEM/ODMs.