My problems is with RAM upgrades. I have three slots available with a max of 128MB each. I bought three identical 128MB sticks which only work two at a time. Each stick works independently in any slot or in any combo of two, just not all three together. In addition, the original 64MB stick also will work with only one stick but not two. Is there a setting or something to allow me to use all three? sbs8

No. You apparently have bought ram modules that are incompatible with your mboard. This is a common problem. Take them back, get three of another type or brand. Better still, take your case/mboard with you, try the ram right there before you buy it. If the 128mb modules have 4 chips, you are more likely to get compatible modules if they have at least 8 chips, which may cost a few bucks more. If you bought modules that were faster than you mboard requires, you are more likely to get compatible modules if you get no more speed than you reqire.

Another option, if you know what motherboard you have and who makes it, you could try flashing the bios. I was having a similar problem, i had 2 128mb sdram sticks but it was only detecting 1 at a time.. I found out there was a newer version of my bios that fixed a problem when using 2 sided 128mb dimms. I flashed the bios and it worked fine.. Of course, if done wrong, you could damage your bios and your computer wont boot and youll need a new motherboard.. so unless you know exactly what board you're using, who makes it, what revision, and what bios version you have, it could be risky

It is very rare for a bios upgrade to cure this problem. If you do not find release notes with the update that state it will fix the problem, do not risk flashing your bios. If your bios flash chip is removable (in a socket), even if you trash your bios, or the chip physically fails while flashing (this is COMMON, not rare) you can get another one, already flashed, but obviously you do not have a working computer till you do (it has to be shipped to you).