My SolidWorks 2015 speed has never been a problem.

I have a Lenovo Y50-70 laptop, it can usually handle whatever I'm doing.

Today, it just decided to stop working essentially. I can't even make a simple sketch in a new part without it twitching and thinking for a while.

None of my other programs, are experiencing any problems, just SolidWorks.

I've reset all of my SolidWorks system options, and I've also set all of the performance settings to their fastest settings, but nothing's worked yet.

I'm at a loss, any suggestions?