This is my problem, last week I lost Internet connection to my 6 PC network. 5 User PC’s and 1 Server PC all running XP PRO. Here is the setup: 512Mbps Cable Modem–>4 port Netgear Router(RP614v2)–>8 port 3Net Switch–>all PC’s including Server PC. Since I lost the Web connection I had to connect the Server PC via a 56k Modem with a backup ISP. I disconnected the Server PC from the Network. When I got the Cable ISP back up and running I connected the Server PC back to the network and disconnected it from the 56k connection. I set the config back to LAN and everything seemed fine for 2 minutes. After 2 minutes all PC’s lost Internet connection and couldn’t access the Server PC to print, access programs that run from the Server. The User PC’s are the clients for 2 Programs that are installed on the Server. The Server PC can see and connect to the other PC’s, but the other PC’s can only see the Server. They can’t print to it, connect to the Shared Folders, C:, ANYTHING !! I get an Access Denied unable to connect message when I try to print or connect to the Server PC. The client PC’s can’t acces the program database on the Server either. The weirdest thing is that when the Server PC get connected to the Switch, all other PC’s LOSE IP’s AND CONNECTIVITY TO THE WEB. As soon as I disconnect the cable from the switch and reboot the PC’s the user PC’s get back the Web connection and can connect amoungst themselves like normal. Then I reconnect the Server PC and the Network collapses completely. No Internet, or network. So I tried taking the Router out of the picture and used another Switch. All PC’s and Server PC get Internet, BUT THE SERVER PC IS STILL INACCESSABLE…NO PRINTERS, NO CONNECTION TO THE DATABASES ON THE SERVER. Just like before except that with 2 switches I have internet only. I checked the Workgroup, LAN settings, ect….with no success.
