Where can I find autoback up file?

I use Coreldraw x5.  Working on project yesterday, the computer decided to update and restart (thought I had that turned off).  I opened CD and the only version in the starting dialogue box is my last saved version which is not the same as what I was working on.  Auto back was set to go every 20 min, but I cannot find the file.  Any tips on where to look or what it would be called.  Also does it delete the auto back up when you next close the program?