I have 1GB RAM in my machine – two 512MB sticks. When I run Windows Memory Diagnostics with both memory sticks installed it reports errors. If I install just one stick then there are no errors at all. I also tested them using memtest, memtester and the Office Diagnostic tools – the same problem occurs.
I've tried all two possibilities for each RAM (1 stick X 2 slots) and didn't find any kind of problem. When I installed both of them, Windows starts annoying (BSOD). My motherboard supports up to 4GB (2 x 2GB). The RAM modules aren't identical (same make/model).
I've tried to adjust the memory voltage from the BIOS, but with no luck.
What am I missing?