Internet explorer quit working

Hello all!

I have an acer with windows 7 that i use for work only, i connect to the internet wireless and had no problems for 3 mounths and then one day i can nolonger connect to the internet i can connect to the wireless router but not the internet and when i click the x to diag the problem it says i have dns server problems what gives i had no problems for 3 mounths and now i do? I searched the internet and found trhat most people are disabling the miniport adapter and that fixed there problem but i thought i would ask the pro's first any help would be greatfull. thanks

 

unplugged for 5mins same problem says dns server not responding

 

Trying to figure out how to disable miniport but cant seam to figure it out could you please advise? i right clicked on it like normal and there wasnt any option to disable it. it was also the default conection and i changed that.