Hi dirk1, Make sure the distance of the system and the router is not more than 30 ft. To get the maximized the performance of 'Wireless Card' installed in the laptop: Note: If the slider is already at Highest / Maximum Performance, move the slider to another setting and then back to Highest / Maximum Performance. Check if the issue is fixed. If the issue still persists, you can try changing the properties of the network card in Device manager. Below are the steps: In case the issue is not resolved, uninstall and re install the wireless driver: If the issue still persists, update the BIOS: Please find the link for BIOS update: [URL] Note: The ac adapter should be connected and the battery should be at least 10% charged. Please disconnect all the external devices connected to the system before updating the BIOS. Please save all the unsaved data as your system will restart automatically while updating the BIOS. Keep me updated. Please reply for any further questions.
I have a Dell Latitude E6510 with a DW1520 Wireless-N WLAN half-mini card.  I used to have a D-Link router which broke down so I purchased a new router which is a Linksys E2500.  I changed the configuration on my laptop to use WPA instead of WEP.  My router is configured with fixed channels (not auto).  My internet connection is continuously being dropped and I have to re-logon to everything (very annoying with vpn tunnels).  All my other desktops/laptops in the house work without problems.
Wireless connection being dropped all the time