I recently upgraded a noisey cpu, fan and heatsink and decided to buy some more ram whilst i was at it. New heatsink installed nicely and went to put some more ram in, only to find out afterwards that dual channel ram works in pairs. My problem is that after reverting back to just two sticks of ram my bios only shows half the amount of ram available. This also didnt happen straight away but after a couple of days. The ram is installed in the correct slots. Cpu-z says they are running in dual channel mode Unganged. Memtest86+ results no errors in ram. Ive reset the Cmos. and ive tried every single possible combination and reseated them about 8 million times. Ive re installed windows. ive made sure that maximum memory is unchecked in msconfig. ive read every single thing i could find on the net about it and i have ran out of ideas. All ive done is stick the old ram back in. Im wondering whether the mobo is broken or the Cpu’s memory controller is broken ? my specs are
Gigabyte MA770T-UD3 (F10)
AMD Phenom II x6 1055T
Corsair CMX4GX3M2A1600C9
if you need any info please ask.
Cheers
Matthew
Sorry, I missed that all 4 sticks of RAM are exactly the same – same brand, same spec, same number of chips, same color, etc, etc, etc.
I can’t see your board, I can only see what’s on the Gigabyte webpage & in the manual that I downloaded. On the site the slots are blue & white, in the manual they’re yellow & red. But there’s a note under the RAM chart that says: “If two memory modules are to be installed, it is recommended that you install them in the DDR3_1 and DDR3_2 sockets. They’re shown as the two closet to the CPU.
If none of them work, not even the originals, you must have done something wrong. When you worked with the RAM, did you unplug the power cord & lay the tower on it’s side so the you could exert enough pressure to fully snap the sticks into place? Are you hearing any beeps at start up? Do you normally hear a single beep at startup? If you used to hear a single beep but now hear none, RAM probably isn’t your problem. Since you messed with the heatsink/fan at the same time, maybe that’s the problem?