I just built a PC with an i5-7400 (HD 630 graphics, no dedicated graphics card), and I'm having an issue after waking my PC from Sleep mode. The screen turns a bunch of different colors, like static, and flickers really fast. This ONLY happens when waking from sleep, so if it doesn't sleep, the PC will function just fine for a whole day (at least). My temporary fix was to just tell the PC to never sleep, but that's not a permanent fix, and I'd like to get to the bottom of this. I tried removing and re-seating the CPU, as well as the RAM and 24-pin and 6-pin connectors (my motherboard only accepts 6 CPU-power pins). I'm also running the latest drivers from Intel.
Update: I just fixed my issue, I needed to update my BIOS. It works perfectly fine now.