That is an odd one
Take a look at your System Startup settings.
An easy way is like this....
Right click MY COMPUTER
Click the ADVANCED tab
Under 'Startup and Recovery' click the SETTINGS button.
Under 'Default Operating System' is there anything about OS/2 Warp?
Don't change anything, just let us know what it says if it OS2/Warp in it.
Click CANCEL to exit without making changes.