You can look into a few options -
1) Check your MySQL error logs in your MySql data folder for any errors -
How to see log files in MySQL[
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2) Check your Windows Event Viewer for any related system or application errors occurring around the time of the MySQL crash -
How to Check and View Windows Event Logs[
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3) Check for conflicting software that was recently installed or updated software that might conflict with MySQL -
How to Check for Software Conflicts on a Computer[
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4) Perform a consistency check on your MySQL database to make sure there are no corrupt or inconsistent data. You can use the 'mysqlcheck' command-line tool -
mysqlcheck: Check and Repair Tables & Databases[
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