M3NI

Hello.
First of all sorry if this isn't a place to post this.
I recently bought an orange pi one. And I'm using Armbian OS. (Latest version downloaded from Armbian website)
But there seems to be a problem with WiFi and i searched all over the internet and i didn't found anything about it.
So here is how it was:
First time that i wrote the Armbian OS on the SD card and configured it (as said by the Armbian website I didn't connected the WiFi dongle) and after doing those stuff I did connected the WiFi dongle to it. It worked fine, but after some mins both LEDs were on. And nothing was working. I did the things I said above many times and the same happend. And once I did those and instead of putting it away with WiFi, I keept it connected to the tv with hdmi, and again after some mins system stopped. This time LEDs went off and display went off too.!
After that I reconnected the power to it. Lots of errors about setting CPU too 480mhz... (something like that) and it did boot again. And with WiFi, same problem did happend. But without the WiFi dongle it works fine.
Anyone knows how to fix this? Thanks
I use 5v with 2a power supply.