hi,
trying to fix a game for a guy with a special needs child, the game is the kids life. when powered up, monitor says signal error. you have to press the little power button on the cpu box. when you do that, it boots up with a bios error. resetting the bios with a keyboard allows game play. turn it off, and you have to hit the little power button again, and you get another bios error.

i think the bios error is the battery, the game was unplugged for a long time. i left it on for about an hr, but i dont think it took a charge. will that battery prevent the cpu unit from powering up or is there another problem? could the back door have an interlock? i didnt see one, and the monitor powers up. i know on a PC, the unit will power up, and freeze until you reset the bios via the keyboard if there is a battery problem . is this any different?

i brought the cpu home. i can plug in a monitor and keyboard and bench test it, correct? what is the power jack input voltage, 12v( center positive) or 5v ?

finally, i guess you have to open up the cpu to change the battery. is it soldered in, or in a holder? i really want to get this going for the guy, the kid had a playstation that he was happy with, and the ultracade got ignored. now he wants the ultracade. if you have dealt with autism, you'll understand. its rough , and if its all that the kind needs, i'd like to make it happen asap. any help is MUCH appreciated. one other thing. i saw on line a bios setting for a power up after loss, or hard power up, or something like that, but i didnt see any option like that in the bios. i only saw an option to skip the POST test. is that the same?

thanks