hot swapping a bios when it's soldered on will not do psychoman
when i put a stick of singlesided 64 mb sdram in the board, along with the doublesided 128 mb windows gave me all kinds of errors when booting windows xp, about missing files etc. when i took the 64 mb out again it worked perfectly again.
another problem i had whas the bad flash. The machine was completely dead after a (according to the flash program) succesfull flash. after a couple of retries on different days, i had still no life, and i was running out of options. then i took all the pci+agp cards and put a pci graphics card in. - THEN, and that probably did the TRICK: i took out the bios battery and booted the system. (with the battery on another table, aside of me for good luck

the system worked perfectly WITH the new bios version!
so i replaced the pci graphic card with the agp one, and it kept working just fine. Then i reinserted all the other cards (soundcard, network card, and i even put in the bios battery again) and i had a complete working system again, and a happy girlfriend who could play her music again, and an even more happy me
by the way, with the new bios version it still has the errors when booting windows if i put in the 64 mb stick. so that one will never see the inside of the computer again

i think i'm just gonna buy some doublesided memory for this memory hating-bios aggravating board
good luck wutianming! let us know if you have any luck!