Asus MAXIMUS VIII HERO Q code 76/77 with SSD

[Shurammi]

So when I have my motherboard placed out of the case with only CPU(with cooling) and RAM connected it show Q code 01 for a while and then starts BIOS. Basically everything seems fine. When I plug in SSD Samsung EVO MZ-7TE250KW the fun begins. I'm getting Q code 77 unless I get rid of SSD. If I clear CMOS and have SSD connected at first start then it shows Q code 76 and I have to unplug SSD to get it work again. I've tried different SATA cable, didn't help. I also checked SSD by connecting it to my laptop via USB and it worked fine.

Parts:

Asus MAXIMUS VIII HERO, Z170, QuadDDR4-2133, SATA3, HDMI, DP, USB 3.1, ATX

Intel Core i7-6700K, 4.0GHz, 8MB (BX80662I76700K)

Corsair Vengeance LPX, DDR4, 2x8GB, 3000MHz, CL15 (CMK16GX4M2B3000C15)

Chieftec BPS-750C 750W

SSD Samsung EVO MZ-7TE250KW (2.5", 250GB, SATA/600)

 

[Paul NZ]

Same errors, but this is the Maximus Hero VII

Could be shorting

Did you put the standoffs in the case before you installed the mobo?

 

[Shurammi]

Yeah, I did that. Also after getting this error I got rid of case. Still the same.

 

[Paul NZ]

Looks like a few people had either Q76 or 77.

And most of them noticed the same thing. It was either shorting. Or the standoffs they installed were too long and shorting on something

 

[Shurammi]

Hmm, I don't get it how it can be shorting. It's working fine without SSD connected. When I connect my HDD (used as storage) it works fine as well. The only way it's not working is when I connect SSD ( and this seems ok when I try it on different PC). I will get SSD from my Mac when I will be back home and try if it will work with another SSD.

 

[cl-justin]

Is your BIOS up to date?

 

[Shurammi]

Yeah, I did update BIOS, even it was already up to date It's weird, I tried with another SSD and everything is fine. Then I plugged in graphic card and tried once again with the previous SSD and it worked!!!! So basically it's working when I plug in GPU, and shows 77 error when I try with integrated GPU. So it's not a big issue at all. But I found out another problem. When I plugged in speakers, I can hear weird squeaky sound until it will start the OS. Same sound at the end of switching off (for a short time). When OS is running everything is fine, but it's kinda annoying. Any ideas?