Upgraded a 486/66 clone PC with AMIBIOS dated '94. Got through install fine but will not go into GUI - NOT EVEN SAFE MODE. It just reboots after hitting the hard drive for a few seconds. Here are the hints and particulars:
Originally had 8MB RAM (this motherboard has 4 - 72pin SIMM slots, 4MB on board and a 4MB SIMM in slot 1 (0?). Added 2 - 8MB SIMMS (4MB is 70ns, the 8s are 60ns). Memory counts up ok and sets up in CMOS ok, Win3.1 ok with it.
Did the install with all RAM installed.
Prior to install - scandisk (including surface scan), virus check (using McAfee), defrag.
1st step was to remove added in RAM - still reboots.
2nd step - remove network card, modem, soundblaster - still reboots (even in safe mode but will work by booting to command prompt).
3rd step - disable internal and external caches, and all shadowing - still reboots.
4th step - took out original SIMM and tried each of the new SIMMS separately and together - still reboots.
5th step - uninstalled (had made a startup disk) this worked and got me back to Win 3.1.
6th step - tried to reinstall to a different directory (245MB free no doublespace or stacker) - here's where it gets real interesting - failed by proclaiming "Cannot start windows in standard mode, try win /3 to start in enhanced mode" - this on disk 2.
So now I am still running 3.1 just fine (with all 24MB RAM, the soundblaster, the modem, and the (nonfunctioning) network card.
Does anyone have a clue?