I updated the bios for this AiO but found out afterward that it was the wrong bios (not documented well on MSI site / flash utility did not indicate any incompatibility). We can remove bios chip and reflash if we have correct file. Original bios said version "AAE12IMS v3.10" (we have screenshot but no bios image). The motherboard is MS-AE121 Rev 2.1. We've found several bios files for 24203D but not this particular variety, they all seem to be for a different rev. If anybody has the bios please let me know. Thank you.