Socket 3, 8 ISA, 3 VLB, 10 SIMM slots, SiS 85C471 and SiS 85C407
Back Side One Marking

Back Side S/N

Front Part: 1

Front Part: 2

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Karlsweldt wrote:First thing I would do is replace that BIOS battery by the keyboard socket.. the round, green object growing "hairs".
That "hairy" growth means the battery is dead, and about to damage the traces or other components. Very caustic mixture in it.
Take note first at the ends of the battery, which should be marked (+) and (-). Should be marked on the board also.
Any residue left on the board can be neutralized with baking soda and water then plain water. A soft, damp toothbrush is best.
A replacement battery can be found fairly easy, some electronics stores, any computer repair shop. Maybe around $6.00 USD or more. Or solder a two-cell AA battery holder leads to the terminals and all should be OK.
The reason for replacing the BIOS battery is that it provides power to the real-time clock and BIOS needs when not on mains power. If the real-time clock is not active, then very likely no life-signs because the bus oscillators won't be active either.
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