Very Strange things happening when turning on computer with video.

frillybob101

Honorable
Apr 20, 2013
405
0
10,860
Hey guys! This has been going on for months and I really think I should figure it out NOW! There is a video attached as that will show you exactly what I mean. But what happens is from a cold boot it starts then shuts off then restarts itself and makes a loud noise and is just fine. Once I'm in windows I can do whatever and it's fine.

https://www.youtube.com/watch?v=IFEbcmXeYUg&feature=youtu.be

The "Noise" is difficult to hear. It is a lower pitched brrirz. It does this almost every time and the sound is always the same.

Specs
2x 7870 Myst in Crossfire
Fx 6300 at 4.5 ghz
2x4 Gb Crucial Ballistix Sport DDR3 1600 Mhz ram
EVGA SuperNOVA NEX 750 B 80 PLUS BRONZE Certified 750W
GIGABYTE GA-970A-D3P AM3+/AM3 AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
Kingston Hyper-X 120 GB SSD (With OS on it)
1 TB Western Digital Blue Hard Drive
6 System Fans to keep the Cards cool
Hyper Evo 212 for cpu in a push pull configuration.
Some generic CD/DVD drive.

This doesn't matter but for anyone wondering I'm on windows 8.1 PRO. And that USB thing is my wireless card. (The graphics cards take up any of the extra PCI(E) slots.



EDIT- I think I found the problem. I reset to stock settings on the motherboard. (Except for boot order and ACPI) and I can NOT replicate the problem. Whatever I do it starts up nice and quiet now. I guess I'll just leave it at 3.5 Ghz. I'm upgrading to the new Devil's Canyon Haswell Refresh once it comes out in June anyway.


Any thoughts as to why the overclock may of done that?

 

Vic 40

Titan
Ambassador

I was looking at that and the only things i can think of is either the psu or the cpu cooler.Maybe with two fans on the cooler is there on start up a difference in speed that makes the cooler blades tremble?
Did you try it with only one fan attached?
 
Too aggressive an overclock of the CPU with insufficient Vcore may cause a boot loop and that's why resetting your BIOS cured the problem.

You may be able to perform a mild CPU overclock without problems. Try 4.0 GHz. The idea is to find the stable maximum CPU clock speed that doesn't cause the problem you experienced at 4.5 GHz.