memory problems

Who can help me? I bought myself a 2e hands motherboard "Expertboard EXP 4044" with a "It's 486DX4-100". It got 3x ISA and 3x Local bus. There are possibilities for 2 '72 pins fpram' (2 banks) and 4 '30 pins ram' (1 bank). After a lot of trying I found a place for my I/O controller and Video card. (both ISA). But' When I start my computer after a while not using it, I can use my memory normal, can create uppermem and EMM will load, but after I restart this is over. It will not create uppermem and/or EMM. (As far as I know the simms are fine) I have a lot of problems installing Windows 95, due to mem problems?? Windows does not give me any clues. Windows installs incomplete, for instant it will not install Iexplorer or some parts of configuration, like software. When I leave the computer several ours without any current, it will function (PS not windows), but after a restart it got the same problem again. I can't find any solution within the BIOS, Award BIOS v4.50 G (1994). What do I do wrong?