My sister was surfing on the net, and unfortunately the main computer was infected with a virus. Whenever I click Malwarebytes, it says it can't find mbam.exe. I need to have it removed quickly, since I am in the process of fixing my laptop, which requires the use of a clean computer. I need help on this matter, and preferably by someone in the USA who can respond quickly, since this is my spring break and I can fix the computer anytime you want me to. Thanks! 