Chosen Solution

I have had my laptop repaired in the last few months. It was a board level repair I needed done asap, as it is the only computer I have currently which is powerful enough to do my work. The people that did the repair told me that what had happened is that one of the two chips that powered the RAM slots on the motherboard had died (causing crashes and crazy graphical glitches), and the way they fixed my laptop was by disabling one of the chips. This means that I am down to 1 ram stick instead of two. Before anyone asks: I tried different ram sticks, hard drives, etc, and concluded it was definitely a board level issue before taking it to get repaired. This has been working well enough, but I would like to get the broken chip replaced to fix the laptop properly (down to 16gb ram, want to go back to 32gb, each slot supports max 16gb). Does anyone know where I can find motherboard schematics for this laptop, so I can work out the name of the chip that died to see if I can source it from somewhere? The motherboard isn’t marked with anything useful I can use to identify the chips, and the service manual only shows assembly/disassembly, not board-level diagrams (which I need). If anyone knows where I can go to source old computer chips that would be amazing. My laptop motherboard number from the service manual is this: Intel i7-6700HQ system board, GeForce GTX 965M, 4 GB Spare part number: 859750-xxx Thank you in advance!

Hi @performer , Here’s a link to the schematics for a HP OMEN 15-AX DAG35AMB8E0 REV-E. Hopefully your board is the same or at least very close. It may pay to open and check. Here’s the maintenance and service guide, taken from this support webpage for the laptop, that will help with opening it etc. A quick look at the schematic seems to indicate that the ram modules connect directly to the motherboard chipset and not that there is a separate ram controller IC - see block diagram on p.1, also p.4 to see where they connect to. Not that you’ll have access to the chipset pins if you want to test the connections, I suspect. You could always check the power supplies to the ram slots - see p.17 & p.18, just in case they’re the problem. If no +3V or +2.5VSUS or +1.2VSUS then at least you can trace them back to see where they come from and why they aren’t there if one is missing