Hello…
How to delete or remove boot sector virus???
Thanks…
??? 
do you mean the MBRoot [Rtk]?
A little more information will help us help you. 
I have format my HD 2-3 times but the virus still remain in the boot sector ( i mean when i start my pc it loading with bios before it loading to windows)
Nothing bad thing happend but when i click on something (e.g. click on start menu) its will keep moving up and down (automatic) and i have to hold down “ctrl” in keyboard key. Some times several of my keyboard not function (@).