New Motherboard ASUS M5A78L-M LX PLUS, bios version 1302 windows 7 Ultimate 64 bit, video ATI Radeon HD 5450. I have installed 8gb of memory and bios reports only 4gb, windows sees 8gb with 4gb usable. I have tried all the usual fixes, updated bios, swapped sticks ( reseated ) install 1 stick at a time to no avail. I can not seem to find any memory remapping switches in bios setup, but something is locking out 2nd 4gb. Any suggestions????