Big problem with WiFi

I have a big problem with WIFI. I used a brand ROM, but a few months ago I changed to the CM13. And since then, I had already begun to have problems with WiFi. It was included, but could not see any network, and with none of them connect to the phone. I tested a lot of ROMs, and the same effect. Back to orginal Rom, it did not help. I have no ideas how to fix it.

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