I have upgraded the memory on a Dell 840 from 4 x 512MB (2GB) to 4 x 2GB for a total of 8GB RAM; clean installed WinSvr 2008 R2; updated BIOS to lastest revision.
On boot, I get the read/write error. The OS recognizes the 8GB but say only 3.62 usable. Have run diagnostics that also recognizes all for modules with out error. Check BIOS settings for OS Installation set to auto. I have also cleared the OS activation and reactivated. It is as if the system thinks I have a 32 bit OS still installed.
Any ideas? Do I reformat and start over with a clean install again?