Windows 7 premimum home 64 Bit

Since hours, google.com is not reachable.

plus.google.com, google.at works fine.

Just reatarted notebook, same symptoms.

PING works

Pinging google.com [173.194.65.105] with 32 bytes of d
Reply from 173.194.65.105: bytes=32 time=45ms TTL=47
Reply from 173.194.65.105: bytes=32 time=43ms TTL=47
Reply from 173.194.65.105: bytes=32 time=45ms TTL=47
Reply from 173.194.65.105: bytes=32 time=45ms TTL=47

But MSIE and Google Chrome get no DNS for Google.com

Windows HOST file also checked.

Google.com is reachable by an other notebook connected by the same WLAN router to the internet