Can't open my drawings in CorelDraw

i've got e problem. My CorelDraw doesn't open some files on my PC. It gives me an error about file corruption. Some of them are old, some of them are new. I thought that problem is in CoralDraw. I've reinstalled this thing. And guess what? Nothing... totally nothing... Then I tried to open these files on my note. Tha same thing. I cun't understand how it happened. Please tell my how to fix these files? May be I should recover them with some spceial soft? As for me, It would be much more easier for me, then tring to understand some programming things. Thanks.