Welp... This is one of those, "this is what happens when you keep pushing yourself with no sleep", kind of situations. I just misread the schematic and swapped a resistor I should have left alone.
onboard RAM is disabled, and I'll be able to donate this guy to our local Community Aid.

Wait... Hold up... after walking away for a bit and then looking at the picture I posted, I think I realized where I went wrong. I think shouldn't have moved RC827 to RC840. I'm going to do one last check before I move the resistor back over.

P.S. I've attached the boardview file I've been using here, as I neglected to do-so in the first place. 😅
P.S.S- Thankfully the 15" & 17" are identical boards....

I feel I should clarify that I wish to disable the onboard RAM to make future repairs easier for the next person who may need to repair the laptop. Plus, I don't have enough confidence in my limited tools to replace the failing VRAM.
I know that I could flash a BIOS onto the system that would disable the RAM with far less effort on my part. However, this will not be my laptop after I am finished with it. I'd rather the next person not deal with the problems that would arise from them (or Windows Update) updating the BIOS.

First, I want to thank anyone who has taken the time to look at my post.
I have a Lenovo ideaPad 3 17IIL05. Board ID: GS454/GS554/GV450/GV550/HS750 Rev 1.0 NM-D031. Intel i5 (10th gen) with 4GB onboard SK Hynix modules.

• I've found memtest86 v11.5 is showing the onboard RAM is failing.
• I've attempted to use the following schematic to disable the onboard RAM: nm-d031
  • I moved resistors RC826 to RC839, RC827 to RC840, and RC828 to RC841.

The problem is now the board is identifying the onboard RAM as Samsung modules instead. Meaning I must have goofed something, or horribly misread the schematic....

Hello! You can call me, Skye. I have a fair amount of experience with soldering and feel I have the fundamentals of DC electronics down. I dabble in a lot of different fields from automotive & HVAC, to appliances & computers (anything that can be taken apart, chances are I will end up violating the warranty 😁). The field I am most knowledgeable in is Computer Repair (both software & hardware); though I have no skill whatsoever in programming (one of those things that just goes in one ear and out the other, I'm afraid). It's been a solid decade since I've registered myself in a forum...