Shmali: To narrow down the options, post your CPU type (WinChip or Rise), audio chip type (Yamha?), whether switch SW4 is present, and if the IDE header pins are clipped.
If the CPU was a WinChip and your IDE header was intact, it was probably unwise for you to have degooped the BIOS unless the unit had phoned home in late 2000. You should have tried the QNX drive image trick with Dolly first (search on this site for details).
Anyway, my guess is that the BIOS socket is hosed, and/or the BIOS chip may have been zapped by static.
Replacing the socket is not for the faint of heart. There is no royal road to electronics skill - you need years of practice and understanding, with many failures along the way, to attempt these kinds of hacks successfully. If you had that experience, you would not have tried degooping the BIOS lightly. This is not to dissuade or discourage you - but just to make you understand the scope of the technical difficulties in this area.
For a start, when you measure voltages, most often you reference it to ground (GND on the schematics). Normally, the black probe is placed on a well-known ground location and the red probe is placed on the point of interest to make the measurement.
A well-known ground location on the I-Opener is on the metal standoffs on which the heatsink is mounted. You can place the black probe on any one of those.
Are R60/R61 populated? If so, the voltages on Q16 are irrelvant. If R60/R61 are not populated, measure the voltages on all three pins of Q16 (with the black probe on ground, and the red probe on each pin of Q16) and post it here.
Don't even try to probe the voltages on any signal pin - that includes virtually every pin on the BIOS chip. There's really no useful information to be gained from the DC voltages on signal nets, and you can very easily end up destroying the I/O buffers on these chips.
To repeat, if you don't know what you are doing, don't do it!