My PC was infected with the malware known as "System Fix," a trojan which bombarded me with pop-ups threatening that my system would fail if I didn't immediately buy their $80 full-version software. I downloaded SpyHunter and removed the malware, but my desktop is now black, my desktop icons are gone, and my programs and Internet Explorer take longer to load. I'm assuming that the Windows on my PC was corrupted. Any way I can fix this? Thank you!