I'm having a weird problem. I noticed it because my MySQL backup failed (it's for XMBC). I can't ping localhost. I can ping other local addresses, I can use the internet, I just can't ping localhost.

I've reset my hosts file back to normal, that didn't do anything. My TCP settings are all set to automatic, IP4 only, IP6 disabled. Astrill VPN is installed but isn't currently loaded or running.

Any ideas? I'm stumped how to fix such a low level problem. Win 7-64, newly restored from a good system image to a new SSD after my last SSD failed, maybe 2 weeks ago. This backup was working fine last week.

ping localhost
Ping request could not find host localhost. Please check the name and try again.

ping 127.0.0.1
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=64

ping 192.168.1.10
Pinging 192.168.1.10 with 32 bytes of data:
Reply from 192.168.1.10: bytes=32 time<1ms TTL=64

sfc /scannow
Beginning system scan. This process will take some time.

Beginning verification phase of system scan.
Verification 17% complete.

Windows Resource Protection could not perform the requested operation.