Reenable the ATI HDMI Audio - then update your drivers
As for the Death Adder, check to ensure that the dadder.sys driver
is really and truly gone from your system (search for it). Most commonly they are in C:\Windows\System32\drivers When you find it, rename it from .sys to .BAK
and then reboot. If the driver loads (with or without the DeathAdder device attached) it can still cause BSOD's. If it BSOD's without the DeathAdder device and without the dadder.sys driver - then we have to look elsewhere for the cause. DO NOT
mess with the BIOS yet!!! It's possible that you installed a beta BIOS - but it's not necessary to do anything at this early stage in our diagnostics.
Go ahead and run the tests and that'll help us figure out what to do.