Illustrator keeps opening same file on launch

[subdes901]

Hi guys, 
Every time I launch Illustrator it automatically opens a file i began working on last week - any thoughts on how to sort it?

Cheers

Ryan

[Monika Gause]

When was the last time you rebooted the computer?

[subdes901]

Ah I do that every morning, its not resolving the issue

[Monika Gause]

You might need to reset preferences. This will erase all your settings.