I used the BIOS you posted, (thanks) That one did not work, OEMBIOS.EXE reports no CAT Then I tried myself the AMI SLIC Mod 1.61 with HP, using amitool.exe, the resulting BIOS was exactly the same as the one you posted, compared it with windiff. I did not change anything in the advanced TAB, it did not work of course. Tried again using ASUS, it did not work. OEMBIOS.EXE reports no working CAT in all 3 cases.