So if you've started Windows 7, tried to troubleshoot a problem, and then shut it down again with the problem uncorrected, Last Known Good Configuration won't help.
So the most important advice I can give is to for driver problems and issues like Blue Screens of Death. See How Do I Start Windows Using Last Known Good Configuration?
Last Known Good Configuration loads the drivers and registry data that worked the last time you successfully started and then shut down Windows 7.
The simplest and recommended method is to download My SQL Installer (for Windows) and let it install and configure all of the My SQL products on your system.
Here is how: You probably also installed other helpful My SQL products like My SQL Workbench and My SQL Notifier on your system.
Many PC users are reluctant to make use of Msconfig, however, because they are afraid of removing something essential.
As a general rule, it is my personal opinion that very few programs are essential at startup.