Removing virus without antivirus is a risky task .If you are technical and you know about windows functioning then read this carefully and if you are not sure so don’t touch this, it can corrupt your software and operating system. In the article how to delete virus using command prompt the method is DOS command prompt but this method is registry editing one registry edit expert can change everything in the operating system and the software.
Every file and program has its own registry value basically virus changes these values and change the functioning of the program like task messenger disabled or task messenger opens for some seconds, pen drive is not showing data etc.
To change the registry key you have to run Microsoft Registry Editor : Regedit.exe
Press windows key+ r in the run window type the command regedit and press enter.Or simply go to the start > run >regedit and press enter .
run window looks like this
If you are not able to open registry editor then may be virus has been blocked it ,To open registry editor restart your pc and run windows as safe mode .In the safe mode, windows will ask you for administrator password to perform action on windows registry .
In the registry editor msconfig.exe or system configuration control our start-up programs. we can open simply go to the run and type msconfig and press enter.
System Registry has these entry nodes
Virus can restore after the restart of pc, if you don’t know so antivirus is important. These run and runonce nodes manage programs. Our starting programs stores in HEKY_LOCAL_MACHINE.Find the node HEKY_LOCAL_MACHINE |SOFTWARE |Microsoft |Windows |CurrentVersion |run .If the file inside the run and runonce is unwanted or you don’t know about this Google this file and delete that if this is spyware or virus.