I have tried all the fixes posted on this forum. Nothing has worked. I have 4 computers, all windows 7 of some sort. All the computers can access my files. I can seee the other computers but cannot access them. It worked a while ago, then all of a sudden, it own't work. I am unclear on the pinging of my IP address. Can someone give me detailed instructions on how and then what to do? I am going crazy trying to fix this. Thanks loads.

If you want to ping the other machines you can do that by opening the command prompt Run..cmd. Type ping \computername or ping\destinations ip address This will see whether you can communicate with them over TCP/IP. http://technet.microsoft.com/en-us/library/cc940091.aspx

Hi, Please update your network adapter driver from manufacture site, disable your security software and firewall temporarily to check the result. If the issue persists, please enable NetBIOS over TCP/IP for testing. 1) Go to "Control Panel -> Network and Internet ->Network Connections". 2) Right-Click on the connection and choose Properties. 3) Click "Internet Protocol (TCP/IP) Version 4" in the list. 4) Click Properties, and then click Advanced. 5) On the Advanced TCP/IP settings windows, go to "WINS" tab. 6) Under NetBIOS setting, click "Enable NetBIOS over TCP/IP", and then click OK. Best Regards, NikiPlease remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.