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Can only use 2 ram slots, doesn't matter which 2, but only 2

post #1 of 3
Thread Starter 
Hi there, so basically what has happened is I went out to buy a more efficient cooling system for my computer, I picked up the h100i from Corsair. Previously I had the h70 on it, and I've done multiple cpu installs, recently installed an i7 3770k without any issues. I've built many computers for myself over the years and this is the first time I've had any issues.
Specs:
MSI Z77a-G45 motherboard
i7 3770k
16gb of Corsair Vengeance 1600mhz
MSI Twin Frozr 7970 3gb OC

So basically, here's the problem:
I can only use 2 ram slots, it doesn't matter which 2, but it can only be 2. Doesn't matter if it's the first 2, last 2, 1 in each black, 1 in each blue. It works, but only if there is 2.

I have checked the bios for the timings / voltages, everything is set right. When I was removing my h70 back plate, the adhesive pads were really stock on there, and required a significant amount of force to remove, enough that the h70 back plate actually broke in half.

Any clue? Could I have messed up the motherboard? Too much pressure from the new cooler? I did everything right when it came to the install, the mount had a little bit of slack etc. I've reseated the cpu probably 4 times now, nothing looks wrong with the cpu, and I don't see any bent pins on the motherboard, but they are extremely small.

Is the motherboard screwed? Or is it the CPU? Thanks for any help!
post #2 of 3
are you sure it is not the ram? (boot with only 1 stick installed, for each stick)
if all your ram is good then yea you probably have a mobo issue. try to contact msi and check if your serial number is still under warranty

if it was your cpu the problem you would have much more trouble.
did you remove everything(ports except video, mouse and kb) and try to boot with all 4 ram?
GW2 Special
(16 items)
 
Redstroyer
(14 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II X2 555(unlocked to X4 B55) Biostar ta870u3+ 6950HD msi twin frozr OC 2x2gb g.skill ripjaws ddr3 1600 
Hard DriveOptical DriveCoolingOS
OCZ Solid 3 Lg combo with IDE to sata adapter H50 win 7 x64 
MonitorKeyboardPowerCase
dynex hdtv 22''(HD)/philips 19''(VGA) k260(logitech wireless combo) corsair 650tx azza orion 
MouseMouse Pad
m210(logitech wireless combo) INFOREM custom mouse pad 
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GW2 Special
(16 items)
 
Redstroyer
(14 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II X2 555(unlocked to X4 B55) Biostar ta870u3+ 6950HD msi twin frozr OC 2x2gb g.skill ripjaws ddr3 1600 
Hard DriveOptical DriveCoolingOS
OCZ Solid 3 Lg combo with IDE to sata adapter H50 win 7 x64 
MonitorKeyboardPowerCase
dynex hdtv 22''(HD)/philips 19''(VGA) k260(logitech wireless combo) corsair 650tx azza orion 
MouseMouse Pad
m210(logitech wireless combo) INFOREM custom mouse pad 
  hide details  
Reply
post #3 of 3
Thread Starter 
Quote:
Originally Posted by remz1337 View Post

are you sure it is not the ram? (boot with only 1 stick installed, for each stick)
if all your ram is good then yea you probably have a mobo issue. try to contact msi and check if your serial number is still under warranty

if it was your cpu the problem you would have much more trouble.
did you remove everything(ports except video, mouse and kb) and try to boot with all 4 ram?

I have tried each stick of ram on it's own, no issues booting up. I've tried changing the voltage, giving the ram a bit more from 1.5 to 1.56, still wont boot. I've entered the timing 9 9 9 24, as well as used the auto feature, still nothing.

When doing the single ram start ups, I had only 1 monitor plugged it, was using the onboard video, and just keyboard and mouse. I then tried booting with 2 sticks of ram, everything is perfect. Computer is giving me no issues what so ever. I even ran a burn in test with no crashes.

I'm thinking I maybe bent a pin some how, I can't see it but I don't know what else I could have done. That or I caused some damage to it when trying to get the old back plate off. I can't find any MSI mobos available for my CPU, but I did find an ASROCK one that looks good.
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