A customer reported that a home PC with Windows $10$ installed in the default configuration is having issues loading applications after a reboot occurred in the middle of the night. Which of the following is the FIRST step in troubleshooting?$($A$).$ Install alternate open$-$source software in place of the applications with issues$($B$).$ Run both CPU and memory tests to ensure that all hardware functionality is normal$($C$).$ Check for any installed patches and roll them back one at a time until the issue is resolved$($D$).$ Reformat the hard drive, and then reinstall the newest Windows $10$ release and all applications.