I am using a Dell Laptop with embedded mobile broadband chipset (Dell 57xx) on Windows 7. During install it goes all the way and then it starts to roll back.

A new compatible connection manager for the 57xx (older than 5720, e.g. 5700 or 5705) device for Windows 7 has been published/released and is available at the following location:-

For DW5720 Verizon, the download
site is

http://support.us.dell.com/support/downloads/download.aspx?c=us&l=en&s=gen&releaseid=R220062&formatcnt=1&libid=0&fileid=313445

For DW5720 Sprint, the download
site is

http://support.us.dell.com/support/downloads/download.aspx?c=us&l=en&s=gen&releaseid=R220208&formatcnt=1&libid=0&fileid=313506

For DW5720 Telus, the download
site is

http://support.us.dell.com/support/downloads/download.aspx?c=us&l=en&s=gen&releaseid=R220338&formatcnt=1&libid=0&fileid=313727

 

Ashish Jain
Program Manager
Devices Just Work, Mobile Broadband