Windows 10: Issues with USB-to-Serial on Windows 10

Hello,


I've been using my USB-to-Serial adapter for years until it suddenly stopped working yesterday. When I plug it in, I don't see any changes in the Device Manager. The device works fine on another laptop. It's as if I mistakenly turned off my Comm Ports or something. The Prolific USB-to-Serial Comm Port remains greyed out.


I tried Add New Hardware and installing the new Prolific drivers -- nothing. I tried uninstalling and reinstalling every Port and USB on Device Manager -- nothing. It acts as if the cable/device is dead -- but it's not, I've tested it on my other laptop. Furthermore, the computer does make a sound when I plug it in, but it just doesn't show on Device Manager.


I didn't change my Windows settings or install any application when this thing stopped working, so I'm really at a loss as what it could be. Did I mistakenly press any keyboard shortcuts to turn them off?


I use this for my fiscal printer at work, which is so important! Any support would be greatly appreciated.

:)

 

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...

 

Windows 10 USB boot

Hi there, am not a windows 10 expert. I have a pc in the bedroom on windows 10, I messed up the bootloader trying to fix the xp on that system.

System wont boot, trying to repair via win 10 usb installer.

Downloaded the media creation tool to install windows 10 installer on usb stick. Not compatible with a host of usb sticks I have. Tried the usb sticks that others use, but I think they use rufus; as the media creation tool by win 10 does not detect the usb stick.

So quick question, the win10 machine i am trying to repair the bootloader is a win7 upgraded to win10.
If i were to use the usb win10 installer to "repair installation" does the version of the iso downloaded via the media creation tool matter?

There is three options:
Windows 10
Windows 10 Home
Windows 10 N

Also is there a step by step instead of using rufus as I want to try an alternative method of creating a usb win 10 installer. Preferably with more compatibility.

System is a asus sabertooth 990 (r2?) with AMD phenom X 6.

Also is there any other software I can load onto the usb that can repair the bootloader easily?
That would be the ideal alternative. Thanks

 

Yellow ! next to Prolific USB-to-Serial Com Port (COM3)

Hi John,



Welcome to Microsoft Community and thank you for posting your query.



Based on your description, the issue seems like HooToo USB port driver is outdated. Let’s try simple steps and check if this help.



I recommend you to update the HooToo USB port driver and check if this helps. Follow the below steps.

• 
  Press Windows key + X and click on
  Device manager.
  
• 
  Click on Universal Serial Bus to expand and right click on the port device and click on
  Update.
  

If the issue still persist, I suggest you to go to the USB manufacturer website and install the driver for Windows 10. If the available USB driver is not for Windows 10, try installing the driver in compatibly mode and check.

HooToo.com | Future Network for Today

• 
  Right-click on the setup file of the driver and select Properties.
  
• 
  Select Compatibility tab.
  
• 
  Check Run this program in Compatibility mode.
  
• 
  Let the driver install and then check the functionality.
  

Hope this helps. If you need further assistance with Windows, let us know and will be glad to help.