I have to restart my print spooler each time I print

My problem was solved by physically replacing my usb port.

I downloaded the fix it tool and ran it but I can't tell if it did anything. Is that how it works?

Yes.

Disconnect the printer. Uninstall the software for your Pixma MG2120 and reinstall the drivers from the link below. Reconnect the printer, restart your computer and test.

http://www.usa.canon.com/cusa/support/consumer/printers_multifunction/pixma_mg_series/pixma_mg2120#DriversAndSoftware

Please use Autoruns to delete 1 entry where the words “File not found” appear. With Autoruns you can uncheck an item, which disables it from starting, or you can right click an item and then delete it. Click the Everything tab and look for the rows highlighted in yellow.

I use avast antivirus. The free home edition.

I downloaded the fix it tool and ran it but I can't tell if it did anything. Is that how it works?

Here is the link.

https://onedrive.live.com/redir?resid=DA7AD86617BDA845%21185

What anti-virus software is installed?

To identify what loads when you boot use Autoruns (freeware from Microsoft).

http://technet.microsoft.com/en-us/sysinternals/bb963902

Select File, Save, change the “Save as type” to Text file type using the Scroll to the right and click Save. Please upload the file to your OneDrive as a shared file and post as a link here.

To eliminate recurring Event ID: 10 errors in your Application log please run the Fix it in this KB Article

http://support.microsoft.com/kb/2545227

This should be a link to all three files requested. All reports were obtained in normal mode.

https://onedrive.live.com/redir?resid=DA7AD86617BDA845%21183

Thank you for your help!