Cannot Contact DHCP Server

(Rather complex problem, which probably should be in two forums, but I'm going to start here. I am using my wife's computer due to the problem, which is compounded by incredibly slow Internet speed today; it is so slow that speed tests won't load. I checked the DSL modem, it is running at its usual 40 40Mbps.)`

This started yesterday, with no known cause such as error messages. I know that I had just done something on line when my WiFi connection to the Internet disappeared. The network icon showed that I was connected to our WiFi feed from the router, but no Internet.

Tried rebooting computer, DSL modem, and router; that did nothing. Plugged in an Ethernet cable, which also did not work. Went to wife's computer and started research, which led me to find that I had no Default Gateway. Followed several sets of on-line instructions to no avail.

I tried an ipconfig /registerdns a while ago, then waited for possible error messages to appear in the Events module, as the process said would happen. There were four such, all referring to the DHCP server during the hour when I ran the ipconfig process. One of the things I had tried to do several times was to reestablish communication to the DHCP server to no avail.

Here is where I should start a second message, but I am so frustrated that I don't want to do that yet; if if turns out that I should, I will. I created a bootable USB ISO, at a speed much higher than I had ever seen that process. Inserted USB on my computer, opened it in a file manager, clicked on setup.com, which installed a new copy of Windows 10 Home.

As that did not fix the problem, I booted into the USB, which gave me a strange message; instead of actually starting the Windows replacement as I expected, I got a text message about this not working if I had booted from USB (or words to that effect), and closed. I was going to create a new USB, wondering if my having already used the existing one yesterday and that is what engendered the failure; I am going to wait until decent network speed returns.

(Last January, after a massive failure which I won't bother to discuss, I created a bootable ISO usb (rather slowly), booted to it, and the process worked. I expected that to happen again today, megasigh.)

hsehestedt said:

The speeds in many areas have been impacted because with everyone being at home practically 24 x 7 and using the internet, the infrastructure in many areas is being pushed to the limits.

As for not being able to to reach your DHCP, there are some things to try:

Start by running these two commands:

ipconfig /release all
ipconfig /renew

Then, run ipconfig to see if you have received a valid address and default gateway. If that does not work, post back and we'll go to the next steps.

I had read that there is no baseball season, at least not yet, but lots of errors committed....

/release all says that there is no adapter in the state permissible for this operation.

/release Not done on WiFi when media is disconnected, same for "Local Area connection 1" (whatever that is; if Ethernet, yes cable disconnected, but I think this also was true when connected), and for WiFi 2 (from the router) "An address has not yet been associated with the network end point".

I hope that you might be able to figure this out, it being well beyond my comprehension.

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hsehestedt said:

The speeds in many areas have been impacted because with everyone being at home practically 24 x 7 and using the internet, the infrastructure in many areas is being pushed to the limits.

I forgot to comment that on my smart phone, using the same WiFi feed from Centurylink, speeds are at their maximum. I swapped cable feeding DSL mode to to router, restarted router, made certain that the three antennas are tight in their connectors, to no avail.

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Samuria said:

To isolate the problem you ñeed to put it next to the router and try cable and WiFi see if it works which would indicate were the problem is

My computer is next to the router, but as delineated in my first post in this thread, it has no Internet. While it does show WiFi, the only time I tried to print yesterday, all I got was an error message; wife's computer works on the same printer. Both machines on WiFi, so I suspect (don't know) that the WiFi connection on my machine is faulty.

I could move router to wife's machine, but would have to move DSL modem to get an Ethernet cable feed; this would be somewhat of a hassle. Internet speeds on her computer were quite good all day yesterday.

I have no way of reading the WiFi signal strength from the router, so cannot determine if it has gone bad; looking at its settings, etc. shows nothing that would seem to indicate a problem, at least not to me.

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Hmm, moving the router with out moving the modem also might just be categorized as a foolish maneuver. Now, if I had an Ethernet cable of some fifty feet or so, I could connected the modem to the moved router. So much for that "brilliant" idea.

See if a winsock reset/repair might help Use Netsh Winsock Reset Command to Fix Windows 10 Network Problem