Destination host unreachable

“Destination host unreachable” is the Error message. What to do next that I may not have tried? All ideas Welcome. I will add more facts where space allows. Thanks
Bob
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test for pinging my own PC

Pinging 127.0.0.1 with 32 bytes of data:

Reply from 127.0.0.1: bytes=32 time<10ms TTL=64 Reply from 127.0.0.1: bytes=32 time<10ms TTL=64 Reply from 127.0.0.1: bytes=32 time<10ms TTL=64 Reply from 127.0.0.1: bytes=32 time<10ms TTL=64 Ping statistics for 127.0.0.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms ------------------------------------------------------------------------------------------------------------------------------------ Below I tried to ping Yahoo, after above Ping of my PC --- --------------------------------------------------------------------------------------------------------------------------------- Pinging 204.71.200.68 with 32 bytes of data: Destination host unreachable. Destination host unreachable. Destination host unreachable. Destination host unreachable. Ping statistics for 204.71.200.68: Packets: Sent =4, Received = 0, Lost = 4 (100% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms