A6210 keeps losing signal...

Hi,

 My A6210 keeps losing signal, although I have installed the lastest version of the driver. 

I read posts suggesting to enter the DNS 8.8.8.8 and 4.2.2.2 in the network properties of the product (ipv4) , as well as going into its energy settings and changing it so that Windows 7 won't turn it off as I use it. 

But in spite of these changes, my adapter keeps deconnecting from the network, which is quite strong. I have a good and constant internet speed on all my other devices, but on the A6210, I either have a really good speed as intented, or a no connection at all.

Help!