Moved a hard drive from 1 PC to a new one w/out a hard drive. Old machine was old HP w/ AMD A8 processor and Nvidia GTX 1050 Ti graphics, new one is Dell XPS-8900 with Core i7 and GTX 960 Nvidia graphics. OS is Windows 8.1 Pro Media Center Edition.
Had no issues, originally, but machine suddenly started kicking the WHEA upon playing EA games like Battlefield 3 and other games like Nations at War, after running some Windows cleaning and enhancement apps. Have since contacted that vendor and can't find any of that product's features at fault.
Machine has always booted w/out issue. Drivers for the GTX 960 on the new Dell machine were a little sketchy, but finally found a stable release. Have gone to Dell support page & loaded in all drivers that appear to be needed, including chipset drivers, but a couple of items that had ? symbols on Device Manager stated that the XPS 8900 isn't qualified to load that driver...like PCI-related items in "Other Devices".
Machine also will not wake up from monitor sleep, if left for over an hour or so. Power plan is set to Balanced, turn off HD never, monitor off after an hour, and the PCI Express latency advanced power feature is turned off.
No matter what I do, the debug files remain the same, pretty much. I haven't gone thru the Intel support assistant procedure yet, to see if it can recommend a chipset driver update, but will do that.
Dell Diagnostics find no issues. I did get the blinking orange LED that stated that memory was bad. I found that leaving 1 of the slots blank allowed machine to boot. I finally ended up replacing all 4 slots with new memory, the Hyper X memory, & it boots fine. Power supply tests good. I have reseated everything but the processor. It has one of those giant finned cooling pieces on it, no fan.
I also found one of the small drum-shaped silver pieces (with blue stripe) from the motherboard, that has 2 pins that likely solder in to the motherboard somewhere, and has several numbers printed on top of it, at the bottom of the XPS's case, loose. Didn't notice it until just yesterday, so unclear when it got there, or if it's even from this machine.
Finally, yes, I know 8.1 Pro is not recommended, so this HD still has the free Windows 10 update available. Happy to do that.
Will post this question, then attach latest debug details.