If you have installed the virus killer, it will remove the malware and encrypt some important information on your computer. The virus also writes to the boot sector the information that it has been eradicated. This code usually containing "C:ReCd_1.exe" in the infection.bat files and number of the most important bit at the end of this file.
The virus' presence depends on the presence of the.com or.exe files:
Numeric programming.exe 50e0806aeb virddae