|Well, I took out the old graphics card and put a brand-new out-of-the box card in a different slot. Nothing.|
I can't get to the Bios setting at all. No response to F2 after the beeps, which is what the board manufacturer says should work.
Tried Derek's idea. Unplugged, held the Power Off/On button down 20 seconds. No change.
I located the Bios reset button and read about it in the manual, but none of the options were really any good (don't remember what they were, but all required using some kind of storage which, of course, is not possible ow. I can't even get through Post, so ...
I know all the RAM is compatible -- 8 gigs had been in the machine for about a year with no problems (I use it all sometimes, along with 100% of all 4 cores using a spatial analysis tool). The other 8 were cheaper, but it's campatible.
I think I'm going to give up. The last spatial problem I did took three 24-hour days to finish. I really need something faster, and this is an obsolete board that runs at about 2.4g or so. So I guess the case will get its new board, processor, and memory some time next week.
You guys have been great, and I really appreciate your responses. I hadn't tried about half of these things, and some of them might have worked. Thank you so much.