Problems with my Network (Need help)

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Jan 4, 2016
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So i got some problems with my pc when it comes to my network.
There is probably a thread like this and if so i apologize!

I have 100/100 fiber line or how ever you explaine it , Anyways , My gaming pc seems to loose connection from time to time , I've already checked my fiber and its totally fine and so i my router but my pc on the other hand get this ''Unidentified Network'' and the network icon shows a yellow exclamation mark and this happens from time to time , Sometimes it goes a few weeks and then it happends or months or days....But it happend to me today and i restarted my pc and then it worked just fine , What is the problem and what causes this for me and can i fix it?

Is it my hardware in the pc?

Bought a new router today and it worked just fine until tonight when it happend again , restarted the pc worked fine since then but it is really annoying when it happends....

(I am running W10)