to get rid of the BKA you can do it by scanning your system with the Kaspersky Rescue Disk. On the site I linked to you should find all the information you need. Of course you will need to create the disk using a different computer.
Please remember to come back and mark the post that you feel solved your question as the solution, it earns the member + points
Did you find a post helpfull? You can thank the member by clicking on the star to the left awarding them Kudos
Please add your type, model number and OS to your signature, it helps to help you.