Everything worked fine for about 4 weeks, lots of gaming, stable and low temps under load (low to mid 50s during heavy gaming). No overclocking (yet). Over the past week there were 1 or 2 times I thought I turned if off at night was running the next day Today I tried booting and got the bios splash screen but no boot into windows. I restarted, keyed into bios, changed an option, hit “save and restart” and it froze. I restarted and for the next Several boots I had blinking underscore cursor in upper left corner but no boot. Reset cmos chip, tried using 1 stick of ram in all of the slots, unplugged usb cables, get different results each time I power on. No longer get splash screen (except briefly for one boot after moving ram but couldn’t reproduce it). Getting different results each time. Most boots seem to have lost all video out. I'm getting several different results each time I boot. Here are some of the things that are happening:
Stick on a temperature on the debug display (i.e. 35, 69, 10, 15, 36) (this happens most times) and nothing happens
Several times it would turn on for a few seconds, turn off, and then turn on again (every few times I try to boot)
Motherboard splash screen, then blank, error code 9C, then turns off (only one time)
I don’t know if it sounds more like a motherboard or PSU problem or something else.
I’ll check the processor pins when I can get some thermal paste in the mail in a couple of days.
Any ideas of what is going on? Does it sound like a power supply issue or the motherboard? Can I rule out the processor since it worked fine for a month? Next steps?
I’d love to figure out which part is causing me the trouble so I can return/RMA new one.
MSI-Z97 Gaming 5
Intel Core i7-4790K w/ Corsair h100i GTX liquid cooler
MSI GTX 980 Ti
2 X 8 Gig Corsair Vengence Pro series
Corsair RM 850W 80+ Gold CPU
Boot disc- Samsung 850 Evo-Series 500 GB SSD
2 X Seagate HDD 4TB (in Raid 1)
Win 10, 64 bit