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This keeps changing on it’s own with my Windows 10 Pro computer and the HP Color LaserJet I have.
When the printer starts to print in Monochrome instead of color check the following:

1. Right click the start icon and select Run.
2. Type control and press OK.
3. Open Devices and Printers.
4. Right click the HP Universal Printing iocn and select Printer Properties.
5. Open the Device Settings tab.
6. Ensure the Device Type is set as Color rather than Auto Detect, confirm any changes by pressing OK.

This is a fun issuer I can into, but gladly I had the keyboard working on the Windows 7 computer that I was fixing. This can be caused by the “Allow the computer to turn off this device to save power” setting being Enabled in Device Manager. Below is a direct copy (Click here for the Original Post) from the Microsoft Community discussion that solved this issue, but be warned it has solutions that involve editing the registry (doing so incorrectly can cause serious issue with Windows) so you should always backup the registry before starting any changes in the Windows registry (See Microsoft KB 322756 for more information):

Perform these steps and check if it helps.

1. Click Start, type Device manager in the Search box and then click Device Manager from the returned list
2. Click to expand USB Root Hub and click the Power Management tab
3. Uncheck the option to Allow the computer to turn off this device to save power and click OK

Note: You may see multiple listings for USB Root Hub, uncheck this option for all USB Root Hubs.
Close the Device Manager

Advance steps would be modifying the registry.

1. Click Start
2. type regedit in the Start Search box, and then click regedit in the Programs list.
3. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Executive
4. In the details pane, right-click AdditionalCriticalWorkerThreads, and then click Modify.
5. In the Value data box, type 2, and then click OK
6. Note You can specify a value that is between 1 and 16.
7. Exit Registry Editor.

Need to get a USB drive back to full space to format after writing it with a different OS? I have had this happen when using an 8GB USB for a Linux Distro install, and then I can’t format it back to the full 8GB again in Windows.

NOTE: You can now format your USB drive.

I found this solution while working on a laptop with Windows 10 and the mouse wouldn’t work (touchpad or USB) and in Device Manager it showed Error Code 10 for the hardware not starting. Removing the device driver and re-installing didn’t help. I finally found that you need to have the following Registry keys in the Registry and set correctly (in my case the key was missing all together) to fix this problem. It can affect Windows versions 7, 8, 8.1, and 10 for ether the keyboard or mouse.

Keyboard:

• Open regedit and browse to:
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}
NOTE: Do not expand the key any further!
• Look for a REG_MULTI_SZ value named UpperFilters in the right-hand pane; if isn’t there then create it (New -> Multi-String Value)
• Make sure the value of UpperFilters is set to kbdclass
• Close regedit and reboot.

Mouse:

• Open regedit and browse to:
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}
NOTE: Do not expand the key any further!
• Look for a REG_MULTI_SZ value named UpperFilters in the right-hand pane; if isn’t there then create it (New -> Multi-String Value)
• Make sure the value of UpperFilters is set to mouclass
• Close regedit and reboot.

Environment Details:

• Windows 10 Pr 64bit
• Wired LAN
• Latest print drivers (as of today)
• Canon MF8350Cdn

ISSUE: When printing from a LibreOffice app, Nodepad, Excel, Word, the Print Test Page button of Printer Properties the application hangs/crashes and never prints. Reloading drivers and rebooting didn’t help. Below are the steps I took to fix it after stumbling across a similar post for another Canon MF model.

SOLUTION:

• Click the Windows button
• Click Settings
• Click Devices
• Select printer (ie Canon MF8300 Series UFRII LT)
• Click the Manage button
• Click Printer Properties
• Device Settings tab
• Change “Spooling at Host:” from “auto” to “Enabled”
• Click Apply, then OK

Should work perfectly now – at least did for me!