URGENT WIpe free space issue

I was wiping my free space using c cleaner v2.17.853... when the main switch tripped :blink: ! When I restarted my computer, i had only 560MB of free space on C: :o . I have tried system restoring and fragmenting, and system restoring; failed attempts. I urgently require help. Please tell me about any way that I can solve this issue. Thank you.

Have you had a look on your drive for am extremely large, named with random letters, which could match your missing space, try looking in C drive.