|Be quick & get Windows started!|
Right click 'My Computer'.
Click 'Advanced' tab.
Click 'Settings' in the Startup and Recovery section.
At the top of this window you will see Default Operating System. Click on the drop down and select the option you want, by hi-lighting it.
Click OK then Apply and restart. If you have selected the correct one Windows will start. If it does, you can then go to the same window again and this time uncheck the box under the default operating system (Time to display operating systems). This will stop the choice being displayed.
Computers... designed to entertain,help with work but most of all to frustrate you!