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Intel Batman MB wont get past BIOS

fsmith2003

Experienced Member
Joined
Nov 2, 2016
Messages
72
Location
Illinois
I have an original Pentium "Batman" MB. It will make it to the Keyboard Detected line but will freeze right after. Wont get past this and occasionally it will not show anything on the screen at all. I have tried several different video cards, ram, and power supplies. All result in same issue. I changed to two large caps near the power connectors but that did not help as well. Anyone have any tips for getting these things to boot?
 

modem7

Veteran Member
Joined
May 29, 2006
Messages
8,535
Location
Melbourne, Australia
I see a Dallas real-time clock module in the photo. It contains a battery. We have seen some motherboards misbehave when that battery drops below a certain value.
 
Joined
Mar 6, 2014
Messages
33
I believe modem7 is correct. Most of these problems are attributed to a bad CMOS battery and if it is a Dallas one, then it does more stranger things when the battery dies. I had a Quantex which faced the similar problems and all of it was cured by a Dallas battery rework. Google it for more information if you have not already.
 

Mr. Horse

Experienced Member
Joined
Dec 13, 2017
Messages
437
Location
USA:OHIO
I see a Dallas real-time clock module in the photo. It contains a battery. We have seen some motherboards misbehave when that battery drops below a certain value.
I second this. and don't bother with the caps just yet other then the two bigger ones by the AT power connector, save the rest of them for last. looking at photos Id say the caps are ok. tantalum's don't fail like electrolytic caps. they ether work no don't 99.99% of them time. and those older smaller kind of smd electrolytic caps this board has aren't all to know for going bad. But they could be the problem.


Here is what I could do in order.
Do a cmos wipe
double check all jumpers, you have the cpu set at the right speed and volts?
test all parts in anther system.
run the system board bones, cpu, video card and one stick of ram. play around abit to see if its a dead pci/ram slot
replace RTC
recap the board and check for bad solder joints.
 

TravisHuckins

Experienced Member
Joined
Apr 5, 2017
Messages
322
Location
USA
Eek... I wouldn't touch a motherboard with and RTC and no external battery connection with a 39 1/2 foot pole. Unless this one does I can't tell. My Gateway P5-90 had a very similar Intel Plato board and it was nightmare... would sometimes freeze when saving my game in Doom (ram issue? IDK). Anyway when I had a socket put in something got messed up and it wouldn't work... I's say bin this motherboard and get a Socket 7 with CR2032 CMOS battery.
 
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