There are several methods to check for errors on the system drive in Windows:

1. Use the built-in Error Checking tool:
- Right-click on the system drive (usually the "C" drive) in File Explorer, then click on "Properties".
- Go to the "Tools" tab and click on the "Check" button under "Error checking".
- Windows will now scan the drive for errors and report any it finds.

2. Use the Command Prompt:
- Open the Command Prompt as administrator.
- Type the following command and press Enter: "chkdsk C: /f" (replace "C" with the drive letter of your system drive).
- Windows will now scan the drive for errors and fix any it finds.

Both of these methods will scan the system drive and report any errors it finds. If the drive is still being used (e.g. the operating system is running from it), you'll need to schedule a scan to run the next time you restart your computer.
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