Weird Gigabyte P35 BIOS posting problem

Okay so my four-year-old got ahold my Steam account and fired up L4D yesterday right (I left him on nickjr.com) - so not suprisingly the opening animation movie with that witch in the closet scared the *#)@ out of him and he freaked and starting pressing the power button over and over again. So I guess he gives up when the computer won't reboot, comes upstairs and says "Daddy, can you fix the computer?"

So now when I try to turn the computer on the post screen of my Gigabyte P35-DS3R runs through memory testing fine, but when it tries to detect the IDE channels it doesn't seem to find anything until the 4th IDE channel, with my WD drive as the master and a Seagate as the slave on that same IDE channel.

For some strange reason my SATA DVDRW comes up as the slave on the 5th IDE channel.

As I recall - and I'm not sure b/c I haven't looked at the BIOS screens in like 12 months - the HDD drives were previously listed as the master/slave on IDE channel 0.

Then the computer goes straigt to the BIOS menu where, regardless of what I tell the BIOS, I cannot get it to boot out of the BIOS post screen - just repeats the weird IDE posting and drops me into the BIOS boot menu. The entire post process is accompanied by a series of limp-beeps and the bottom of the screen has a message that says "entering menu"

No hardware has been changed at all, and in the 18 months since I built the computer it has thus far been completely bullet-proof. I've literally had ZERO problems with it before.

I'm really confused.

Specs:
e6750
Corsair 2GB
Gigabyte P35-DS3R (http://www.gigabyte.com.tw/Products/Motherboard/Products_Overview.aspx?ProductID=2543)
Radeon 2900XT
2 HDD's: IDE WD250 and a Seagate120
1 DVD: Samsung SATA drive

Clearing CMOS? Like flashing the BIOS?

I'm working on it - for some reason the utility on the MB that does that (Q-flash) won't talk to my A drive - so I ordered another one - I dunno if its the mainboard or the drive but for the price of a floppy drive its not a big deal . . .

I can't run any diagnostic software because I cannot get the computer out of the BIOS boot menu. =(