Hey , how many PC users would have the patience or knowledge to repair this with the instructions...
Actually any PC user who buys the first revision of a brand new motherboard typically deals with the exact same type of problem. You should expect to flash the bios multiple times in the first year, and there will definately be bugs.
If you don't like this then either wait for a later revision when all bugs are irond out, or buy a preassembled system from a dealer. Amiga or PC, buying separate components has it's risks.