Lock Screen Image Missing

[chex]

I had a bunch of my own artwork from sketchbook which went missing once I updated to 8.1 however one of them is the current lockscreen.

I'd like to save it but I can'd find it. Checked in C:\Windows\Web\Screen but only the defaults are there. The image is obviously somewhere on the PC, any ideas where I can find it?

 

[marc2003]

if you upgraded, do you have a windows.old folder? it might in there somewhere.

or you could just search the entire c: drive? use detail view in the results and add a dimensions column. click that header to reverse sort it so largest images are shown first.