Graphic Card installed with an `incompatible` power supply and infinite rebooting

[Qwarty]

Hello! (I'll do my best for my english, sorry about any misspelled words)

I just received a graphic card, a MSI GeForce GTX 1060 3GB GAMING X, and I installed it in my computer that I built about a year ago, which was working fine. But when I plugged my graphic card in, I accidentally broke the USB pin connector on my motherboard. I was not really worried, telling myself only the two usb port of my case won't work. But when I pressed the power button of my computer, my computer would work for about 3-5 second, without anything showing up on my screen, and then the computer shutdown. Then 1-2 second after, it reboot, and it goes like this, rebooting infinitely. I need to unplug the power cable of my power supply to stop the infinite loops.

Also, sometimes, it won't reboot, just my computer working but nothing on the screen, and even when I press the power button of my case, it won't shutdown.

Is it possible that the wire of the power button of my case is connected with the usb ports of my case? So this is the reason why my computer was rebooting or the power button not working to shutdown it, because I didn't plug this usb cable in my motherboard, and it's not like transmitting any off/on switch?

So I was thinking my graphic card had something to do with it, so I removed it, but the exacts same problems continued. And, after multiple reboot that I forgot to check, I felt some smoke coming out from my computer. There was a bit of burning on my motherboard, and a part of it was really hot.
Even after this accident, my computer still launch but the same problem happen.


I concluded that it has nothing to do with my graphic card, but then I noted I did a mistake. I checked the compatibility of my graphic card with the other component of my computer, and it was saying that PCI-Express 8-pin power connector is needed. So that mean I plugged my power supply, which is not suppose to work with my graphic card with 6+2 connector but not one exactly 8, with my graphic card. So because I did that, my motherboard overheated or something like this happen, and even when I remove my graphic card, my computer won't work and the infinite loop thing goes on, so it doesn't even work with or without my new graphic card.

My graphic card looks okay (I hope), but now I think I should buy a new power supply. Which power supply you advise me, that works with my graphic cards but is really cheap? I also think I should replace my motherboard because of what all happen, but I'm honestly very desperate right now and really don't know what to do! Is there also any other solutions?

Thank you very much!

The place where my motherboard was hot :
https://postimg.org/image/5bhqsagvh/

Power Supply : Apevia 500W ATX Power Supply
Motherboard : ASRock z97 Anniversary ATX LGA1150 Motherboard
CPU : Intel Core i7-4790 3.6GHz Quad-Core Processor
GPU : MSI GeForce GTX 1060 3GB GAMING X
Case : Deepcool TESSERACT SW ATX Mid Tower Case
RAM : G. Skill Ripjaws X series 8GB (2x4GB) DDR3-1866 Memory
Storage : SDD :OCZ ARC 100 120GB 2.5" Solid State Drive and an HDD

 

[CountMike]

USB and start/reset button have nothing in common but check for sticky Start and reset buttons, they ca cause such problem.
6+2 PCIe power is same thing as one 8pin just make sure both are plugged in correctly.
The "thing" heating up is chipset. It contains controllers for most of MB's parts and shouldn't heat up much. Typically running at 40 - 50c.
Don't know which PSU you have there but many lesser makes never get close to declared power.

 

[Qwarty]

Thanks a lot for the information!

Is there a way I can simulated an off/on switch or a way to unstuck it if it's stuck?

 

[CountMike]

You'll have to open case, find pins that lead to the Start switch (usually marked Front_panel) disconnect that connector and short those 2 pins with small screwdriver or something like that.
Start button, just like Reset button are just ordinary momentary switches just like door bell for instance.