OK, the sequence of events went like this. As a photographer, I wanted to run Topaz AI software, but my machine didn't meet the specs. I thought I could just buy some RAM and a better GPU (Radeon RX550) and get off cheap. While I was at it, I also bought a 2TB SSD. It worked for a while, but odd things started happening: BSOD, freeze ups, boot loops, etc. I have run diagnostics on every component but the motherboard. They all passed. These days I usually can't even get it to boot, and if it does it runs great for a few minutes and then locks up again. I'm running Topaz on the new XPS8960 now, so all I need the old one for is printing bank statements (no Windows 11 driver for my old printer) and letting my granddaughter surf Sponge Bob and Blippy. Thanks for the advice, really, but with all due respect, I still need an answer about the mobo ID. I'll factor in the finances when I know what my options are.