Pc won't boot

[jackle13]

Hi guys,

I have had this motherboard for nearly 3 years Gigabyte Z77X D3H. It says on the board itself revision 1.1 - however when I tried countless times to upgrade the bios it said the 1.1 version I had was an Id error on all of the avilable version for my revision .

I had to in the end use the gigabyte tool to download and upgrade the bios in windows.

The psu ive had until now is an XFX XXX 750w. The psu is now making terrible coil whine and can't deal with it and for the life of me can't find the receipt / Warranty.

Anyway the other day I ordered a EVGA 650w GS. Plugged it all in... Won't boot at all. Fans spin for one second.

I disconnect everything apart from motherboard power.. Still nothing.

So I plug my old one up. Boom powers straight up.

I send the evga one bacK.

I've now bought a Corsair RM650i. Guess what.. The same god damn thing.

Seriously? How is this motherboard incompatible with every single new decent psu?

I'm angry and frustrated that such kit from Gigabyte is poorly constructed to not handle a decent psu from two completely different manufacturers. Yet handles my old XFX made by sea sonic at the time and is only bronze rating.

Can anyone help me please on what to do?

 

[Borealis]

It could be a total coincidence that the two PSUs didn't work, as in they were both DOA! It can happen. I would be extremely surprised if it's an incompatibility issue with the board and PSUs.

If you havern't already tried this, try the absolute bare minimum. 1 stick of RAM and just the CPU on the board, with no graphics card (using onboard graphics) and just the necessary power connections to try to get the system to POST.

Given the history you've had with the weird BIOS update issue, it makes me wonder if the board has never been quite right.

 

[jackle13]

Thanks for the reply Borealis.

I've found out my issue and it makes sense why but never knew that could cause the issue.

I was using an extender 8pin to 8 pin so that the cable ran through the back of the case around to the top to the motherboard. When checking the cable the extended pin configuration was completely different to the configuration of the 8 pin end from the psu.

Once I plugged the 8 pin directly from the psu bypassing the extender cable it worked.

A few others were like this.

Lesson learned. Use the cables provided with the new psu and not existing by trying to be lazy.

Hope this could help someone in the future (if they do a me).