lol yah, iv been a tech for a few years now, got my a+ and mcse
Yet you have to ask if PC100 and PC133 RAM will work together? Must not take much to get those certs
I would say you were looking for facts than opinions since it sounds like you're having troubles with the RAM cooperating together, but oh well.
I've got PC2700 and PC3200 mixed up in this case right now with a CPU that only has a 266FSB lol