BSOD back with Quad Phenom II 940

Weird!

I have a ASUS M2N32-SLI Back in Feb I upgraded to a Phenom II x4 940 Black box along with two new 1066/800 Memory DDR2

I had two 1 TB seagate drives that after 6 mths DIED.I now have two replacments! In reinstalling everything! XP64 worked fine as setup,no problems at all!

SO! I install VISTA Home premium 64bit UPgrade! it got to the reboot! BSOD 7E.........Anytime one has 4 gig in place ZAP!

It acts the same way as it did before the BIOS was replaced back when. works with 2 gig but fails when 2 gig is added! WORKED fine with my old AMD X2 x6000.


XP has NO problems what ever with 4 gig..Mem test ok! Vista will crash after the load bar moves 3 times and a 1/2!

I,m doing this from XP! Only thing I can figure is 4 Cpus have added another Mapping problem! Can this be fixed?

I do like 4 gig!

Dennis

ASUS M2N32-SLI Deluxe MB with AMD phenom II x4 940 4 gig OCZ high end DDR-2 800/1066 memory

EVGA GTX-280 Video card 1 gig DDR-3 memory!

2 x 1 tb Seagate 7200 rpm Drives SATA
2 x DVD SATA drives , 1 BlueRay Sony, The other is a Plextor

1 x 22" ENVISION with Webcam/3 USB ports/mike and amp, 1 x VG1930 wm ViewSonic 1440x900 19"