Strange intermittent boot issue on NP9772

Having a weird boot issue on my NP9772 (P770ZM). Every so often, and it happens completely at random, the system will power on but not display the boot screen. It will run for about 20 seconds or with the black screen, then shut off for 1-2 seconds, them immediately power back on, boot normally, and work perfectly.

I'm using Prema's system and GPU BIOSes. Everything is set at defaults - no overclocking. The issue will happen with both legacy and UEFI settings. I've tried tweaking everything in the BIOS I can think of, but it still happens.

It's frustrating because it's such an intermittent problem, and there's nothing specific I've been able to do to get the issue to manifest itself with regularity. At the same time, I'm not too bothered by it since it doesn't otherwise affect functionality. Is there anything I might have missed here? Suggestions are appreciated.

 

It could be a weird timing issue related to a specific set of circumstances. If you could change the clock of one part (Ram is my primary suspect) it may make it go away.

 

Thanks for the reply. The RAM I have is G.Skill DDR3-2133 that's rated at 11-11-11-31. The BIOS automatically sets those timings, but it shows that the RAM is running at 1.5v when the official specifications say it's only rated at 1.35v. There doesn't seem to be a way to change the voltage, but I did drop the timings to 11-11-11-34, which is what G.Skill's other DDR3 SO-DIMM modules are rated for. We'll see how it goes.

 

It probably a weird start up issue, so don't be too concerned.