Thank you for the quick reply. Having done a lot of pre-reading before posting I have experimented with the all of the following suggestions with no change:
Wireless Configurations
Links>Wireless Installation Considerations and Managing Signal Congestion and Good Neighbour Policy
•Ensure the default (dlink) SSID name is changed. Can be anything and not something thats already in use by any neighboring WiFi routers. Under Setup/Wireless/Manual. Done this.
•What wireless modes are you using? primarily 2.4 as 5 has poor range - both are affected when it goes down•2.4Ghz and 5Ghz routers:[/b] Try single mode G or N or mixed G and N on 2.4Ghz and single mode N on 5Ghz? Tried this.
•Channel Width set for Auto 20/40Mhz or try 20Mhz only. And this.
•Try setting a manual Channel to a open or unused channel. 1, 6 or 11. 11 for single mode N if the channel is clear. Nope - no change.
•What security mode are you using? Preferred security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES, so you might want to try TPIK only or Auto TPIK and AES. Tried these variations.•What wireless devices do you have connected? 2 apple devices, wii, xbox, playbook, laptops (3)•Any cordless house phones? Yes - DECT 6.0
•Any other WiFi routers in the area? Link> Use InSSIDer to find out. How many? several - have ran tests to ensure no interference•If you have any of these options, Try turning OFF or ON Short GI, WLAN Partition, HT 20/40 Co-exhistance and Extra Wireless Protection if you have it. Recommended settings are default. Under Advanced/Advanced Wireless. Yep, did this too.
Keep in mind this is not limited to wifi but fails on LAN devices too. This is why I am thinking the processor can't keep up or overheats. I have read the issues on these units and heat problems which also leads me to believe this is the problem. I can appreciate a fan blowing on it may help but I am not interested in a make-shift solution and expect a product to run without home modifications. The router is in a cool basement and there are no other devices nearby blowing off heat.
To get a replacement modem, who should I contact? Again, thank you for your assistance, I appreciate the fantastic support on here.