Okay so just installed a new corsair 4gb ram in my machine, and then vista wont boot at all....whereas it does with my older ram...in the same memory lane
SPecs:
New ram: Corsair 1 X4gb stick DDR3 1333 CMV4GX3M1A1333C, 1.5v
Old Ram: Zion 1X@2gb DDR13333(hynix chipset)
CPU: Phenom 2 555BE...