Im not an expert about computer, but just to sharing the knowledge... So if there have any conflicts please remind me so that I can learn too....
a)Go tp Local Area Connection then right click
b)choose "Repair" tab (if still cannot solve the problem,click "Properties")
c)"Local Area Connection Properties" appeared
d)Double Click on Internet Protocol(TCP/IP)
e)Then "Internet Protocol Properties" appeared
f)Choose circle Obtain an Ip address automatically n Obtain DNS server adrress automatically
e)Click OK, look whether successfully or not .
Sorry my english is bad...