I've recently bought a GeForce GTX 750 Ti SC to upgrade my M3450 with. I have already upgraded the power supply to accommodate the more powerful card. However, after installation, I've gotten a bizarre error that results in three very slow beeps at the boot screen, followed by a black screen. After returning the card and getting a new one, I have received the same error.
After looking into the issue further, I have been able to determine that it is an imcompatibility not with any of my hardware, but with the Aspire M3450's BIOS, last updated 4/20/2012. See:
http://community.acer.com/t5/Desktops-All-In-Ones/bios-update-on-acer-aspire-m3450/m-p/254120/highlight/true#M9131
http://community.acer.com/t5/Desktops-All-In-Ones/Aspire-M3450-at-bios-P01-A3-won-t-recognize-msi-GeForce-GTX770-3/td-p/302124
After having already upgraded my computer to run this better GPU, I would really prefer to not have to upgrade the whole mobo in order to get. Is there a more recent update for the M3450 BIOS, or perhaps a workaround of some sort?