Network connection down

[Madeline]

My computer has been connected to a LAN and working
properly, but it just suddenly wouldn't recognize the
connection anymore, as if there's no network cable
plugged in. It's definitely something wrong with the
computer, and I was wondering what it could be. It would
look like a hardware problem, but the indicator lights at
the ethernet port seem to be lighting up fine. Everything
else with the computer is still good too. I've restarted
it a number of times and tried to add a new network -
it's still as if there's no connection.

I don't want to restore my computer or anything unless I
have to. Any suggestions? Thanks!

 

[Chuck]

My computer has been connected to a LAN and working
properly, but it just suddenly wouldn't recognize the
connection anymore, as if there's no network cable
plugged in. It's definitely something wrong with the
computer, and I was wondering what it could be. It would
look like a hardware problem, but the indicator lights at
the ethernet port seem to be lighting up fine. Everything
else with the computer is still good too. I've restarted
it a number of times and tried to add a new network -
it's still as if there's no connection.

I don't want to restore my computer or anything unless I
have to. Any suggestions? Thanks!

Madeline,

Let's do some basic diagnostics first.

From your computer, and from one other computer, test connectivity:
1) Ping the other by name.
2) Ping the other by ip address.
3) Ping itself by name.
4) Ping itself by ip address.
5) Ping 127.0.0.1.
6) Ping the router.
Report success / failure of each test (12 tests total).

Please provide ipconfig information for your computer, and the other computer.
Start - Run - "cmd". Type "ipconfig /all >c:\ipconfig.txt" into the command
window - Open c:\ipconfig.txt in Notepad, copy and paste into your next post.
Identify operating system (by name and version) with each ipconfig listing.

Cheers,
Chuck
Paranoia comes from experience - and is not necessarily a bad thing.