I do not have any advanced tools for the replacement of a USB port and I do not know who I would have to go to get it fixed. From what I have seen from the previous questions, there is probably a loose connection, as the USB port only works at certain angles, however, I do not know what tools I would need to fix this, and I also do not know if I would be able to fix this. Please respond soon, as I do not wish to be without a mouse, and instead have to buy a wireless USB extension.