New
#1
Dell Laptop suddenly not communicating with DHCP
I have had a Dell M4500 since 2011 and it has performed rock solid until yesterday when it would not connect to the network. I get the same problem with Ethernet, the built-in wireless and even my Verizon Jetpack - no network or internet connection. I tried all of the usual things like cold reboot, disable and re-enable adapter, etc. I even deleted both Ethernet and wireless adapters and had Win 10 reinstall them. I then tried the following commands on the command line, run as administrator, to reset the TCP/IP stack:
netsh winsock reset catalog
netsh int ipv4 reset reset.log
netsh int tcp set heuristics disabled
netsh int tcp set global autotuninglevel=disabled
netsh int tcp set global rss=enabled
No joy. Then I tried these commands that others suggested:
ipconfig /flushdns
ipconfig /release
ipconfig /renew
Still no joy. However, after resetting the TCP/IP stack I am now able to enter manual settings and connect to the network here at the office. The DHCP server (SonicWall NSA 250 M wireless-N) does not have the laptop listed in the connections of course and the start bar ethernet icon shows "identifying . . ." still.
Oh, I should mention that all other 11 computers on the network can connect to the Ethernet just fine. Everyone's phone and another laptop I brought in to test with can all connect to the wireless fine. Further, when I took my laptop home to test it on that network there, I had the same problems. Any ideas?
This is my maiden voyage on this forum. I hope I have given enough information. Thank you for any help.