Unsolved
This post is more than 5 years old
1 Message
0
2199
January 21st, 2020 14:00
T5500 riser memory failure
So I have a T5500 with two CPUs and 6 x 4GB of ram installed. Every time I boot up I get "memory failure detected in riser DIMM 1". If I don't use that slot, the error just jumps to the next populated slot.
The system works just fine if I don't use the riser so I'm pretty sure the ram is ok. I've even tried swapping the motherboard and CPUs, so the issue seems to be with the riser itself. I've checked the pins under 10x magnification and can't see anything wrong. Pins for the riser/mobo connection look fine. Pins for the CPU are fine too. Nothing bent anywhere. No leaky or bulging caps in sight.
BIOS (v. A16) sees the installed ram modules on the riser just fine and windows knows they're there too, but says only half the ram is usable. Am I missing something here or am I just out of luck and the riser is busted?
Charlie935
6 Posts
0
January 25th, 2020 23:00
Did the system work before it started doing this? I'm not familiar with the T5500 but I don't think it's much different than my T7500. I know my system is quite finicky about how the RAM slots are populated and what type of RAM can be installed in what slots and in what order and so on. Check the Dell web site and get the operator's manual pdf for your system and check the RAM population schedule. Don't know if that will help but it's worth a shot. If that doesn't get it straightened out then I'm guessing you have a PCB problem with the riser board. I have fixed dead motherboards by putting them in an oven at 325 degrees for about 5 to 10 minutes to re-flow the solder traces but I would make that a 'last resort'. Try that at your own risk.
jonmelvin
5 Posts
0
March 6th, 2021 07:00
Same problem on T5500. But sometimes it is DIMM3, and sometimes it is RISER DIMM3, and sometimes the problem goes away after a few weeks, and it is different if the motherboard and riser are populated with X5650 processors and with X5690 processors. I have swapped out DIMM3 and RISER DIMM 3 DIMMs. No help there.
Any way to find out what the bios is up to?