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Posted - 05/04/2021 :  11:00:06  Show Profile  Reply with Quote
If you keep getting com errors regardless of what, open Device Manager and see what driver pops up.

I had an issue where it would call the RAMPS driver (for Matterhacker 3D Printer crap) whenever the 300 was plugged in.

I tried just uninstalling the driver from the Device Mangler but it still kept coming up as RAMPS on some COM port

So then I recalled this post

Where it states:
"Go to Device Manager or alternatively run the command (WindowsKey + R):


Right-click the device you need to uninstall and go to Properties. Select the Details tab and then select INF Name from the drop-down list.

Once you have the INF Name, type in this command in a command window opened with Admin privileges:

pnputil.exe -d INFName.inf

If you face issues try forced deletion:

pnputil.exe -f -d INFName.inf

Worked. Now the GC 300 uses the correct driver. There's something wrong with the device ID that either Matterhackers or GC is using.
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