I have a Hp dc5850.
It was running hynix memory 512mbx4 pc2-5300.
I purchased Hynix 2gb x4 Pc2-6400 giving me 8gb of ram to max out the system. And the ram is just for AMD systems.
The problem is with all 8gb of ram installed the system will not boot windows before it crashes. If I remove one stick of ram it will run fine.
I have ran the memtest.org and it shows errors with all 8 gb installed, and none with 6gb installed. I have swapped the ram around to try and figure out if one stick is bad but they all seem to check out OK with the memtest CD.
I'm stumpted at this point.