Hello ReidReid1,
I am Jaspreet Singh.
This issue is caused by the way onedrive handles the automatic backup and to resolve it sadly you will need to reinstall/setup onedrive again.
Once installed and setup follow these steps :
Click on the small onedrive cloud icon in your taskbar (You may need to click on the up arrow to see it)
Then click on help and settings (gear icon in top right hand side) and then again on settings.
Then in the pop up window click on the first tab (settings)
Untick the last option that says "save space and download files as you use them"
(This will start the process of downloading all your data from the cloud back to your device)
In addition to this untick the first option that says "start onedrive automatically when I sign in to windows " (this will prevent its autostart)
Once the data has finished downloading (You can verify that by looking at the folders) click on backup tab in the same popup window.
click on manage backup and untick all three (desktop/documents and pictures)
once this is done close the backup window (This will return the associated folders back to onedrive root folder or will provide you with a link saying "where is my data" clicking on this link will take you to a folder containing your data and you can move them back to where they were initially with the exception of anything that you deleted)
At this point please visit www.onedrive.com and compare to your system and look for any data that is still missing in your system. Download it and make a backup since we will unlink onedrive and that data which has not been download will be lost.
Once you have verified go to the Account tab on the onedrive popup window and click on unlink this pc. Confirm your choice and onedrive will be removed from your file manager (You may not be able to delete onedrive app completely from your system since it is an integrated part of onedrive but it will not longer access your files or back them up)
One additional step can be to right click on taskbar then click on taskmanager.
Click on More details at the bottom and then click on Startup tab.
Search for onedrive in the list (if it is not there you may ignore this step)
Right click on it and click on disable.
That is all please let me know if you face any issues.