none of my USB ports are working

I just bought a new Kingston Ultimate 32 GB USB 3.0 flash drive. It works fine in my 2.0 ports but will only light up in the 3.0 ports and Windows 7 64 bit does not see it. I have enabled the USB 3.0 ports in my BIOS and I have got the latest NEC USB 3.0 driver for my MSI P55-GD85 motherboard. ...

Last night I was transferring some files from my laptop to my external hard drive and everything was working fine but then a couple hours later, I went to plug in some rechargeable USB batteries that I have and noticed that they weren't lighting up. I then tried plugging in several of my other USB...

This is a brand new custom built PC for web browsing for a motel lobby. Win7 Home Premium AMD A4-3300 Llano MSI A55M-P33 FM1 Rosewill FBM-02 MicroATX Mini Tower Running latest BIOS and latest drivers downloaded directly from manufacturer's website. I tried switching between all 3...

My computer crashed and I had to take it in for repair. They put Windows 7 on it and I am liking it so far. However, none of the USB ports work. I work from home and all of my files are on an external hard drive so this is a big problem! I have a Dell Inspiron E1505. I have tried...

When a USB device such as a flash drive is plugged in, the computer does not react at all. It does not find the device nor does it show (not even as unknown) in the device list. However when I boot the computer with the device plugged in, it works fine. IThis may be related. I have an 'Unknown...