Asus M4A87TD/USB3 -- Windows 7 boots while no Linux Distro Boots

[SOLVED]

I am running both Fedora 14 and Windows 7 Professional on a home-built machine. The two operating systems are installed on different internal hard disks, and boot using Grub v1.99. The motherboard is an Asus M4A87TD/USB3 equipped with an AMD Phenom II 1075T processor and 16GB of RAM (G.Skill running at 1333Mhz).

Since the beginning of December, Fedora 14 and all other distributions of Linux have been unable to boot. During the boot process, the Grub screen appears and allows me to select between the operating systems installed. When I attempt to boot Fedora 14, the Grub screen is replaced with a screen of kernel errors, which run until I shut off the machine. This happens with all other distributions of Linux I've tried, both as Live CDs and bootable USB sticks, regardless of whether the internal hard disks are connected to the motherboard.

All the while, the computer boots Windows 7 Professional without incident. I suspect that I may have allowed Windows 7 to update some kind of Asus motherboard driver or firmware, but I cannot find evidence of that in the "uninstall programs" control panel in Windows 7. Further, the Asus website does not appear to have any firmware update for the motherboard other than a BIOS update, which I have yet to perform.

Attempted solutions:

* Booting from a USB stick with the latest available Linux kernel
* Uninstalling all Windows 7 updates back to October 2011 (long before the problem started)

Solutions I'm thinking about trying:

* Updating the BIOS
* Replacing the motherboard

My questions to the community:

* Have you noticed such behavior in Linux-Windows machines before?
* Under what circumstances have you noticed this similar behavior?
* What do you think might be the cause of my problem?
* What solutions would you recommend I try?

Thanks, all.