Have tried other solutions here but still unable to connect to internet with either firefox or explorer. Can ping so problem is (it seems) with the the browsers being blocked from connecting. Suspect by malware. But Kaspersky, Malwarebytes, Superantispyware, CCcleaner, SpyHunter, Adaware & a few others don't find any problems. Programs which access internet directly (updates & other) work OK. Only Explorer & Firefox are not able to connect. Also tried to roll back registry, but that doesn't seem to work. Suspect very sophisticated malware . . . or just bad, obscure setting somewhere? Help please!