Ok so ive posted about other codes...I personally think my mobo is f'd up somehow because everytime I try to boot I get a different error code, but after reseating everything and doing the whole ram 1 stick yada yada...I am now getting the post code error "68" on my LE mobo...what does this mean? Im about to just cave in and RMA this board and buy a classy...


SimC

EVGA_Knud

Code 68 = B8 in fact and is memory related. It cannot detect one of the memory DIMMs correctly. Can be faulthy memory (Try to run with 1 stick only) or the cpu needs to be reseated (Check for bent pins as well).

 


yea ive already done all that like 5 times now..I think that the mobo is shorted or could of caught some static when I was swapping out the water in the WC setup 

ERROR CODE 68 NO POST.  The problem is very annoying.  However it has been solved.  If you will note it should post in memory slot 1, channel 1.  Channel 2 (slot 3) will not post, unless you update your bios.  However, updating your BIOS still will not allow channel two memory to be recognized (in bios) and will not be usable (in windows); example: 12 GB installed (4GB usable).

The memory controller is on the Processor of the core I7's.  However the problem is not the processor.  Even loosening your heatsink as EVGA instructs will not solve the issue.  The issue is the backplate for the heatsink.  You must loosen it to the point that it's still screwed in however it's movable, allow gravity to hold the heatsink on the cpu and don’t forget to reset your BIOS/CMOS via reset switch or by removing your CMOS battery (very important).  After you have done this and there is no pressure on your board (CPU area) go through the process of installing your memory.  It should POST with all channels recognizable unless of course you do have some kind of hardware failure.  It should be noted though that electronic components are very different then mechanical.  Since there are no moving parts, failure is rare.

You can tell that it is a backplate issue also because you will also get a 'New CPU installed' message after taking out the memory module for channel 2 (slot 3), it will post only in channel 1 (slot 1 & 2).  You see, the BIOS thinks you installed a new Processor because of the excessive pressure in that area caused by the backplate warping the LGA socket and not allowing the pins for the memory controller to make contact.  Loosening the backplate and resetting CMOS fixes it.

Once you FIX and TEST everything with the backplate loose and heatsink unscrewed (gravity contact only), then go ahead and tighten but do not over tighten; although I feel I didn’t tighten it too much either, especially with thumb screws ya know!  Anyway, tighten the backplate just enough to make contact with board stopping the backplate from moving around.  Then install the heatsink, reset CMOS and install memory and fly away!

NOTE: I've noticed that Noctua backplates have a THICKER pad then Thermalright.  The THICKER BACKPLATE PAD allows the backplate to be slightly higher off the back of the LGA socket or CPU area which helps prevent this problem.  The Thermalright backplate pad is thinner then Noctua's which will apply more pressure against the back of the LGA socket when tightened.  My guess is that you probably do not have this problem if you have Noctua, but I guess variations exist in everything.

I hope this helped, I know it's long, but so is the process of elimination!

-Vasilios-

Vasilios1

ERROR CODE 68 NO POST.  The problem is very annoying.  However it has been solved.  If you will note it should post in memory slot 1, channel 1.  Channel 2 (slot 3) will not post, unless you update your bios.  However, updating your BIOS still will not allow channel two memory to be recognized (in bios) and will not be usable (in windows); example: 12 GB installed (4GB usable).

The memory controller is on the Processor of the core I7's.  However the problem is not the processor.  Even loosening your heatsink as EVGA instructs will not solve the issue.  The issue is the backplate for the heatsink.  You must loosen it to the point that it's still screwed in however it's movable, allow gravity to hold the heatsink on the cpu and don’t forget to reset your BIOS/CMOS via reset switch or by removing your CMOS battery (very important).  After you have done this and there is no pressure on your board (CPU area) go through the process of installing your memory.  It should POST with all channels recognizable unless of course you do have some kind of hardware failure.  It should be noted though that electronic components are very different then mechanical.  Since there are no moving parts, failure is rare.

You can tell that it is a backplate issue also because you will also get a 'New CPU installed' message after taking out the memory module for channel 2 (slot 3), it will post only in channel 1 (slot 1 & 2).  You see, the BIOS thinks you installed a new Processor because of the excessive pressure in that area caused by the backplate warping the LGA socket and not allowing the pins for the memory controller to make contact.  Loosening the backplate and resetting CMOS fixes it.

Once you FIX and TEST everything with the backplate loose and heatsink unscrewed (gravity contact only), then go ahead and tighten but do not over tighten; although I feel I didn’t tighten it too much either, especially with thumb screws ya know!  Anyway, tighten the backplate just enough to make contact with board stopping the backplate from moving around.  Then install the heatsink, reset CMOS and install memory and fly away!

NOTE: I've noticed that Noctua backplates have a THICKER pad then Thermalright.  The THICKER BACKPLATE PAD allows the backplate to be slightly higher off the back of the LGA socket or CPU area which helps prevent this problem.  The Thermalright backplate pad is thinner then Noctua's which will apply more pressure against the back of the LGA socket when tightened.  My guess is that you probably do not have this problem if you have Noctua, but I guess variations exist in everything.

I hope this helped, I know it's long, but so is the process of elimination!

-Vasilios-

Thank you very much for this!  I am constantly getting both of these; error 68 and the "CPU changed" warning, both of which are extremely annoying.