I love my PC!

Today i found my pc has been crashed due to a viruse (HEUR). Last night I downloaded a crack for my evaluated version of MIRC (i dont know if anyone uses it anymore), but that turned out to be a very bad virus. I had my kaspersky antivirus turned off at that time, but when I clicked the exe of the crack I wondered I should check it if its a virus or not but it was too late.. My whole computer was inffected by it till then wasnt it too fast? I quickly scanned my whole computer with kaspersky and went to sleep next day i found every exe file on my computer to be inffected! I tried to neutralize all of them but during this process I think some of my system files also got removed and my pc crashed and real hard. Both my hard drives are corrupt now. I tried formating them on a different computer i tried to install WinXP and Win98 but no luck. Now am really tired so am going to sleep bu bye.