I'm currently working on an issue where my Verizon Wireless Mifi device (890L) periodically disconnects from the Internet about 1-3/4 to 2 hours for no apparent reason. The device must then be rebooted to reconnect again.
I have already completed many, many, many troubleshooting steps based on Windows forums postings throughout the Internet.
My specific question today is - under Windows 7 - what does it mean precisely when the system network tray icon that shows a graph of radio bars then shows a Yellow exclamation point. Yes - the LAN Wifi continues to work to the 890L router, but the Internet portion of the connection is now disabled. How does Windows 7 know this - what is Windows 7 doing behind the scenes to detect such a condition ? If I knew more about what Windows 7 is doing behind the scenes, I might better be able to determine the next set of things I'll be looking at about disconnect issues.
Also of interest - I have an Android WiFi tablet which stays connected and does not cause the Internet to drop if it is connected along side the Windows 7 laptop.