I tried to upgrade my HP Compaq 8200 Elite SFF PC to 2 X 4Gb Rams PC10600 DDR3 1333 modules,I tested each module in slot 1 (Back slot in top) and the PC boots fine no error message,I then tried both each in the black slots, one on top one in the middle to make total of 8Gb Rams,the PC started with error message 201 with option to reboot by pressing F1, I rebooted and the PC runs OK, then I decide to test again each ram in slot one black,now each display error message 201 when tested individually in slot black one! why is that?are the rams become having some fault or some changes in the system?
Any help is very much appreciated.
thank you