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Posted 12 August 2014 - 06:13
Posted 12 August 2014 - 06:29
I had recently built a new computer, my integrated USB ports are giving power to my mouse and external hard drive but the system does not recognize them what so ever! I want help with this please. It has always done this. My mother board is a gigabyte 78lmt-s2p
When it comes to USB (regardless of speed OR manufacturer), there are exactly three points of failure:
1. Not all ports are active (check your BIOS settings - if you have more than the outboard USB ports, some may be disabled by default; the motherboard I just moved out of had eight USB ports; however, half were disabled by default).
2. Driver/compatibility issues (critical with third-party USB controllers) - go to the documentation for your motherboard for this - is there a third-party USB controller that manages some of those ports? (Apparently, this is NOT the case for your motherboard - I have its manual open in another window.)
3. Controller/hardware failure - this should be looked at if NONE of the USB ports work.
#2 is out (the motherboard's chipset manages all eight USB ports), which leaves #1 or #3. If some of the ports work (but not all), #1 is the obvious choice. From the documentation, your motherboard is like most, with half the ports built-in and outboard, while the other half rely on header-connections (to either the rear OR front of your case).