I have a network which includes a few unmanaged switches.
I have one switch which clearly works because other machines downstream work fine.
But there is one machine attached to that switch which will not acquire an ip. Nor can it ping anywhere useful on the network. PIng loopback seems to work fine. I have tried 2 different computers in the same location and both are having the same issue. Have used multiple cables as well.
I already did a network reboot and turned off all switches and back on.
Bypassing the switch and plugging computer directly into another upstream switch did not work either.
COMPUTER(OK) -- SWITCH -- COMPUTER(OK) -- SWITCH -- MODEM
- - - - - - - - - - - - - - - - - - - |
- - - - - - - - - - - - - - - - - - - |
- - - - - - - - - - COMPUTER(NO IP)
Does anyone have any ideas?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic