Hi there, i m new here. Recently my pc had been used by other ppl that i don know n my drive had save alot of junk and i don even know who is this. So my action to this is to unable the drive to be open o password. So hope sifu-sifu here help me to guide thru tis. Or izit another way to deal wit tis beside having any sofware ?

Is there any way beside using sofware to do it? 'cos mostly is a free trial.