Windows 10: W11 Serial devices not more connectable

Hi, i am devoloper since 40 years, and handle often with serial USB Ports to communicate with Microcontrollers.This was always no problem in early times, but since w11 it give randomly and sporadic ,but often massivley problems to connect an serialport . They are after period of time not anymore connectable based on China Chip driver wch.cn Original Windows Update DriverThe only solution was , deinstall them drivers, reinstall and it's works with luck for new period of time.In heavy cases twice counted the serialdriver are after reinstall , not more connectable, but visible. An System

:)

 

How to factory reset Cisco 1700 Router

Hopefully I can help you here....its a very common thing to happen.


First, I take it you dont know the passwords for console access or telnet/ssh?

I will assume that these devices belong to you.

step 1. Plug a cisco console cable into a serial port on your pc
step 2. Plug other end into Cisco console port
step 3. Using hyperterm or putty or similar connect to the serial port
step 4. boot router, and make sure you clearly can see the output (this confirms you have good serial comms)
step 5. if this fails, adjust the comm port settings (9600, 8,1,n are the default)
step 6. now you have to do the only hard part...send the break command:

Break command list: Break Commands

Go down the list and match your OS and SW and try the sequence suggested.

If this fails several times do what I do: Install putty (free) and then to send a break so you can get into rommom just hit "ctrl-a b".

 

Windows 10 serial on OEM


So I'll summarize steps made...

1. Saved serial number (taken with Belarc Advisory) from preinstalled (half chinese language) Windows 8.1 (don't know exactly the version, suspect Windows 8.1 with bing) on tablet
2. Formatted tablet
3. Tried to make a clean Windows 10 (HOME, HOME N and also PRO, everytime with the same result) install with ISO taken with MediaCreationTool, during install (and also after completing installation) it says that the saved serial is not valid
4. Tried to reinstall Windows 8.1 (ISO taken with MediaCreationTool again) HOME, it says that the serial is not valid

So i suspect that the saved serial, is from a WINDOWS 8.1 WITH BING OEM version and this kind of ISO is not accessible/downloadable anywhere (at least I can't find it, any suggestion?)

Still not tried SHOWKEY with that serial, I am in office now, and the serial is saved on a usb pen at home, will try this evening.

So I'm stucked but if everything is like I suspect, it's incredible. If I have a tablet/notebook/netbook with Windows 8 preinstalled, it seems that I can update to Windows 10 without problems, but if I want to make a clean Windows 10 install that serial is not valid...

 

Device not recognized by Windows 10

Hi Jan,

To isolate the issue, have you tried connecting other devices to your laptop?

If other USB devices connect without a problem, we may need to troubleshoot the USB itself. If not, we suggest that you uninstall the USB controller in Device Manager and check if it helps.

Here are the steps:

• Open Device Manager.
• Find Universal Serial Bus controllers and expand it.
• Right-click the first driver in the list, click Uninstall, and then
  OK.
  
• Repeat all the steps for all the drivers in the list.
• Restart your PC.

Do update us with the outcome.