I used to have a wireless Wi-Fi card plugged in the laptop and was successful in getting a wireless connection to wireless hot spots. I removed the Wi-Fi card and uninstalled the D-Link wireless software used to run the Wi-Fi card. I am now not able to establish a workgroup LAN file sharing over a wired connetion to my router. Prior to the removal of the wireless software I could establish a wired LAN workgroup sharing with my other computers. I am guessing that perhaps some required Microsoft windows service was turned off by the uninstall/removal. Or ???
All 3 computers are connected via my router to the internet by a broadband cable modem. All three computers are running: Windows XP home, SP2, with all critical updates installed; Zonealarm as a firewall in which all of the possible assignable IP addresses to the computers have been entered as a trusted IP range in Zonealarm; Microsoft firewall OFF on all. I have tried turning off Zonealarm on all computers but this does not affect the outcome described below.
All 3 are assigned to the same workgroup and subnet. The 2 desktop computers see each other and file/printer sharing between these 2 is working. Neither of the desktop computers can see the laptop as part of the workgroup, and the laptop cannot see either of the 2 desktops as part of the workgroup.
All three computers connected by wireline to the router have no trouble accessing the Internet through the WAN port of the router.
I went to each of the 3 computers and was able to ping the other two successfully (test showed 0ms average reply times).
All three computers have NetBIOS enabled and all three computers show under "local area connection properties" the appropriate items enabled: client for my for Microsoft networks; file and printer sharing for my for Microsoft networks;/qoS packet scheduler; Internet protocol (TCP/IP).
I have tried to map a network drive on my business computer to the laptop computer, and select browse for folders in the map drive setup, I see my workgroup and it expands into 3 units: busniess computer, family computer, laptop; all with + signs indicating further expansion is possible. However, when I click on laptop in the network map browse window, there is a pause and then the + sign next to the laptop in the browse window disappears and I cannot setup a network mapped drive to the laptop. I tried the same procedure from the family computer attempting to set up a network map drive to the laptop and get exactly the same ressults.
I tried to force a network map drive to the laptop on the business computer by typing in the path \\laptopname\sharedfolderpath to a shared folder on the laptop but got a path not found error.
Similarily, I am not able to setup a network mapped drive on the laptop to the business computer. On the laptop when in browse for a folder window in setup a mapped drive, I see my LAN workgroup name with a + sign, but when I try to expand there is a hesitation and then the + sign disappears next to the workgroup name indicating that none can be seen/found.