Won't open most cdr files

I am recently having an issue where Draw will freeze while opening a document.  This happened again a few weeks a go and I fixed it but can't recall how.  I can create a new doc and save and reopen just fine but not existing ones that use fonts and more graphics and whatnot.  Has anyone had this problem and fixed it?

1.  tried F8 reset - no success

2.  tried puter repoot - no success

3.  tried repair install - no success

4. tried replacing power supply (on a laptop) - NO SUCCESS