I tried all USB ports with no success. Computer does make the sound suggesting that the device is connected but nothing shows up on screen. I tried to connect other devices and they all work fine, I tried to plug the drive to another Laptop and it showed up there. It is reocgnized in computer management but not in DIsk drivers but in USB controllers as Mass Storage but it shows an exclamation mark. I tried to klick on drivers update but it doesn't work, it says that it found the driver but the access was denied 🙁 I'm desperate because I need that drive tomorrow for my school project, Thanks for any help. I have an HP 255 G1, WIndows 7 Ultimate