PC fails to enter POST following RAM installation.
PC fails to enter POST following RAM installation.
Hey! I recently upgraded my system by adding two new RAM modules (2x4GB). I was expecting a bigger capacity, moving from 8GB to 16GB. The two sets I already had were working fine together, even though they came from different manufacturers. After installing the new sticks, my PC stopped booting and didn’t receive any display signal from the graphics card. Everything seems correctly seated and there’s no visible damage on the sticks or DIMMs in my motherboard (Dell Optiplex 7010 SFF). The RAM I used is the same as before: three are identical (Zeppelin 4GB DDR3 1600Mhz) and one is a Kingston 4GB 1600Mhz. I even tested just the Zeppelin sticks without any changes. The issue only shows up when three or four sticks are active at once. What I tried: reset CMOS, reset BIOS to defaults, and tested each stick in every possible combination (3 or 4 sticks). Specs: Intel i5-2500k, MoBo motherboard, Dell Optiplex 7010 GPU, GTX760. Thanks!
Initially, have you tested each stick in every individual dimming port? That means insert the chip into the first slot, restart, power down, then swap to the next slot and repeat for all modules. Also, try using the new Zeppelin sticks alone. Thirdly, test each new Zeppelin stick with one of the older ones. Check if the newer sticks match the old ones in terms of chip count—not just size, frequency, or model. This isn’t a definitive sign of problems, but up to and including the 3000 series, I’ve noticed some hidden memory issues. I’d request the Zeppelin memory model numbers, though they don’t provide useful details. For instance, my desktop (and a laptop nearby) can work with single-rank 1x8 modules and dual-rank 2x8, even using an adapter for the laptop. Conversely, the laptop I gave my nephew could only handle 2x8 modules. As a temporary fix until December, I had to scavenge a dual-rank module from an older MacBook that ran at 1066MHz instead of 1600MHz. I also faced problems with certain Zeppelin chips: they booted normally in BIOS but crashed immediately after loading an OS. Additionally, there were issues with the CPU’s memory controller or other components because my 3570 seemed to randomly crash the machine. I ran MemTest86 on it and thought it would fail too, unless I forced the BIOS to run just one core and turned off the rest.
Hey! I learned from the manual that the Kingston RAM is single-rank and the Zeppelin ones are dual-rank. I checked the user guide, noted the mixing rule, and bought another Zeppelin stick to test if using all four identical sticks helps. Looking forward to hearing about the result! Thanks!