Hey guys, so I've had a problem with my pc that's haunted me for a couple years now. I've rarely had to face it simply by keeping my pc on all the time but I'm finally in the mood to smite this annoyance.
First off I'll post the main parts of my build
Core i5 4690K, Gigabyte Z97M-D3H, 16gb Patriot Viper memory, MSI Gaming GTX 970, EVGA SuperNOVA 750w Gold
So, here's how it goes. Whenever I boot my pc, regardless of it's a soft boot or hard boot, there's a few things that can happen. Each scenario seems to have about an equal chance of happening, maybe less so for a good boot and usually do not get successive boots of scenario 1 and 2.
1. There's a chance that the pc doesn't boot at all. The pc fans spin up and the power button LED gets lit up, but nothing else really happens. A quick tap of the power button immediately shuts off the pc.
2. The pc boots completely normally.
3. The pc boots up as normal but the boot is laggy to varying degrees. Now, i don't know what the cause of the lag is, but the way I've been measuring if the boot is a bad boot is by checking dpc latency with "DPC Latency Checker". I know that program introduces latency itself, but a bad boot will typically have astronomically tall bars, so it's a quick and surefire way to know. The issues while I have this kind of bad boot are typically a large amount of audio popping whenever there is audio playing, and artifacting when video plays. Also, if I were to boot up a video game, the frame rate tanks. Sometimes I get 20 fps, other times 0.2. I have no idea if these numbers are on a game-by-game basis or boot-by-boot but it's painful to test so I haven't. Curiously though, when I launched Left 4 Dead 2 on a bad boot, the issues of the boot disappeared so long as the game was running. The other day I had a boot that appeared to be a good boot, but while playing Rainbow Six Siege the game occasionally dropped frames from my usual ~90 to ~65. the frame times were nasty, so I suppose it's not always immediately nasty if I had a good boot or not.
Now, I've swapped my gpu from my usual 970 to my old 6950, and these issues completely went away. Weird huh? I concluded it was probably an issue with my gpu, so i got it RMA'd and the replacement card had the same problem. I got a refund on that card and bought another 970 second hand, this time from a different manufacturer (from gainward to msi) and I STILL have the same problems. This leads me to believe it's a driver issue, but it can't be because this issue has persisted through multiple driver reinstalls and I can't seem to find anyone else with my kind of issue (maybe I'm googling the wrong terms).
I'm left to think that the issue is either with the motherboard, with the psu, or with my windows install.
Any ideas? thanks.