network path not found

Hi, I have just come into the office and I think I may have had a power failure over the weekend.

When I turned on my pc it couldn’t connect to the network, nor could 2 of the other four pc (clients) but one can!!!
Any suggestions of where i might look to find why? or test to find out why…and then how to fix.

Not knowing huge amount in server management – Manage Client Computers…right clicked on my Client computer, clicking Manage computer and a message stating “network path was not found”