USB Port Issue

Hi guys,

USB ports are driving me crazy, one minute all is ok and I can work for maybe an hour or so, next minute port stops working and I get the Powersurge on Hub Port message.
The only device I am using is my mouse with red light when it is working.
I have to plug the mouse in/out/in/out etc. until the red light comes on again.
Some times after trying many time I get a feeble flickering light.
At that point I try the Irish method by pulling the plug and have a pint.
The mouse works perfectly on my laptop.
I let the computer stand for a wee while only for the above scenario to start all over again.
I am not sure if it is related but when I start my computer first thing I see is the Welcome to the Found New Hardware Wizard, I have installed nothing.Wizard attempt to install Video Controller(VGA) compatible but can't find it.
As I was making the screen print of the Wizard, the Powersurge message came on again but this time I was able to continue.

Computer details:
Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows XP Professional, Service Pack 3, 32 bit
Processor: Intel(R) Core(TM)2 Duo CPU E4400 @ 2.00GHz, x86 Family 6 Model 15 Stepping 13
Processor Count: 2
RAM: 3071 Mb
Graphics Card: NVIDIA GeForce 9500 GT, 1024 Mb
Hard Drives: C: Total - 199996 MB, Free - 151181 MB; F: Total - 105246 MB, Free - 101341 MB;
Motherboard: Gigabyte Technology Co., Ltd., 945G-DS3
Antivirus: avast! Antivirus, Updated: Yes, On-Demand Scanner: Enabled

I have attched a number of screen prints so you can see what I see.
I noticed that the Unknown USB Device is shown at 3 different places on the 3 different screen prints.
I hope you can figure this out for me.

Cheers, Thickbrick

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