I suggest looking at the other posts here on this site on the same subject (there are at least 3) & if that doesn't help, please return here.
Also, check into possible DNS poisioning. (especially check your ISP to see if they patched this - info is on this site as to how under "opinion about DNS Exploit fix")
I (& others) have posted answers there & it is just to redundant to keep doing it. Sorry, if this causes any inconvenience. (as always, I speak for myself on this as, others opinions may very)