A month ago, my HP Pavillion stop recognizing my two external hard disks that work fine (I´ve tried them ok with other PCs). There are no letters shown in Windows Explorer.
However, my computer does acknowledge all my memory sticks (pen drives), even my Sony Walkman, the wireless MS mouse, and other USB-based units hooked to my PC.
I have no clue whatsoever what is going on. Any ideas how to fix this problem?