I put together an i5 system over the weekend.

Intel i5 760 2.8GHz Socket 1156
Gigabyte GA-P55-USB3 P55 Socket 1156
Sapphire HD 5770 1GB GDDR5
16GB Corsair DDR3 1333MHz
OCZ 60GB Vertex 2E SSD 2.5" SATA-II
Samsung HD103SJ Spinpoint F3 1TB
Corsair 650W TX Series PSU
Windows 7 Pro 64-bit

All was working fine until i stuck in a USB drive to see the message USB device not recognised. I tried another memory pen to see the same message appear. I tried different ports, even the front panel gave me the same messages.

I started trawling the web to find a mixture of posts etc on the subject.

I have removed all of the USB root hubs in device manager, but this has not improved the situation. I have disabled the USB legacy in the BIOS... No good. Even disabled the USB 3.0 host controller to see if it would make a difference.

Flashing the BIOS is another option i could try, but am slightly dubious of this.

Anyone came across the issue before? Or able to suggest other areas to look into?

Many Thanks

I have been testing again this evening.

I have been able to use an iPhone and a powered External HDD, they have installed fine and I have been able to browse their contents.

So it is just USB pens that are not being detected... Any ideas?

Please, don't create duplicate topics.
Topic closed.