A variation on similar problems others have had. I have had my network running for a couple years without problems. I'm using Comcast Business Class broadband with a static IP and a Linksys E3000 router for a home business network. Four wired computers and the rest are wireless for a total of (22) nodes. All set up with static IPs. Over the weekend I tried to add a wireless security camera and part of the installation required accessing my router. When I attempted to login to the router I found my password access no longer worked. I ended up having to do a factory default restore. I have printouts of my original setting so I recreated the original settings for my WAN side and LAN side, set up for static and set the range for DHCP IP's. Two of the wired computers are working as they should, the wireless seem to be working. Two wired computers are not. The problem is.....When I set up the IP configuration as static in my main computer and close the system manager the computer sees the network and internet for about 30 to 60 seconds and then drops the default gateway IP address. Go back in and check the settings and the gateway address field is blank, all the rest of the settings are intact. Repeat, good for 30 to 60 and goes blank again. Checked ipconfig/all, did the ipconfig/release, uninstalled the network card and let the system reinstall, same problem. Tried giving up on static setting for the moment and thought the system was working but then is started dropping the internet and network again. I'm running ot of options. The two computers that DON'T work are my main server that runs the accounting software that is synced with the internet ecommerce website and the shipping department funning UPS Worldship and Quantum view. Without these two computers I'm out of business! I have orders to fill and can't! The only other think I can think of is I used Cisco Connect to do the initial configuration for the router and ran it from the main computer. Wondering if is set something in the registry that is trying to override the static setting? Even a friend of mine that is in charge of network IT has been unsuccessful with this. I need help FAST!