your crazy fsb might have scrambled the bios chip, or the HDD/vid card if agp/pci lock didnt hold
i would see if i could reflash the bios from floppy, even if done blind just by watching light each time you type and enter
or try another hdd with an o/s already on it.
Asus will sell yoiu replacement bios chip for ~ $15 (maybe free if you cry)
sometimes, one must short cmos, unplug psu and leave for 24 hours, install cheap crap ram that SPD detects at easy to run high level timings, perhaps install even a $20 SIS pci vidcard (vga) - replug, unshort cmos, boot to bios, immediately set failsafe defaults
your 1.9v isnt too swift either, while you cant hurt the cpu, you can hurt the mobo
http://www.devhardware.com/forums/t40653/s.html
and you didnt say in rig which 3400 claw you have
if you are gonna play around like that, you really need a dfi mobo
since you didnt get too many answers, i threw out a bunch of stuff here.