I have a 10yr old PC (450mHz P3 – Win XP Home) which has given me great service. My problem is such: my AOpen AX6BC motherboard has 3 DIMM slots. In DIMM1 I have a 512MB module; in DIMM2 & 3 I have 128MB modules (768MB installed). The BIOS, POST screen & Everest (a system monitoring prog) show the installed memory in the range of 384 – 392MB. I ran memtest86+ and it also says 384MB of RAM – all the modules work in other machines. What’s wrong?
