Errors in the file system on your hard drive can cause programs (including Rocket League) to fail or work improperly. Microsoft has included a tool called "Chkdsk" (CheckDisk) in Windows. Running Chkdsk will search your system files for errors and attempt to fix them.

Most computers have their operating system installed on the C: drive. If you have additional drives you may need to run Chkdsk on them as well.

In Windows 10 do the following:

1. Click on the Folder icon in the lower left corner of the screen
2. Right click on Local Disk (C:)
3. Select Properties
4. Click on the Tools tab
5. Click on the Check button
6. Click on the Scan Drive button

If an error is found, you will be asked to reboot your computer so that Windows can attempt to fix the error. If you continue to have problems you will need to contact Microsoft Support for further help.