Matrox has a new BIOS for abovementioned cards.
Release date: Jan. 2, 2002
Filesize: 2.04 MB
Release notes: Matrox Setup and Utilities (v.2.55.002) Fixes bug where our graphics BIOS was using DVI timings even though the hardware has no DVI connector. Fixes bug on the G550 where in some cases, any monitor conneceted to the HD15 connector would be blank either during post or blank during post and also in Windows. Download BIOS