Windows 10: How to stop my COM port from failing?

I'm working on an application to upgrade the firmware on a microprocessor. The upgrade happens over a COM port connection, and the discovery, communication, and releasing of the port all more or less works. The issue I have is that occasionally, after the upgrade, my application is unable to open the COM port for exactly 5 minutes. Ordinarily I'd assume COM being weird, but I've seen this 5 minute delay multiple times on two host computers, and the fact that the delay is 5 minutes exactly waggles its eyebrows suggestively towards this being an esoteric Windows feature. I don't have an exact er

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USB ports failed

Hi,

To fully isolate where this problem is coming from, please answer the following:

• Have you tried connecting the peripheral devices to another computer to check if they will function?
• How old is the laptop?

You can find additional things to try to fix USB port problems on this
page.

We also suggest you run the Hardware and Devices Troubleshooter
in Windows 10. Here are the steps:

• Press the Windows key on your keyboard.
• Type Troubleshooting then press Enter.
• On the left side, click View all.
• Select Hardware and Devices.
• Click Next and see if it will find any problems.

Keep us updated about the issue.

 

usb port reset fail

Hi Laura,

We would like to know more information regarding the "usb port reset fail" error that you are getting. To verify whether this issue is being caused by the port or the external device, we would like to gather more information:

• What external device are you trying to connect to your computer?
• Have you tried connecting the external device to another port or different computer?
• Have you tried connecting a different external device to the port?
• What troubleshooting steps have you tried so far?

Regards.

 

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".