Satellite L40 USB, wireless, modem, and its failure

I'm trying to solve a Toshiba Satellite L40 and ask yourself how I diagnose a hardware failure.
Problem is that the free wireless and sound had stopped working and it would freeze whenever a USB device has been inserted.

Decided to do the new install of XP, but it failed each time to 34 minutes.
I've suspected of hardware failure as well as a USB was curved touching another PIN to cause a short circuit.
Bent it back but install still failed at 34 minutes.

Remove the wireless card, always not so I removed the modem and it went through without error.
Installation of two causes fall in XP install.
Have installed all the latest drivers and even flashed the BIOS, however, still have the following problems:
Insertion of a USB device causes yet portable no freeze, no sound and wireless / modem not picked up by windows during the installation after the installation.

Shows Device Manager:
1 exclamation point on "Microsoft UAA bus driver for High Def Audio"
2 "unknown device" in the USB controllers but not exclamation mark - peripheral USB not connected.

It is possible that the 'short' USB has damaged a controller on the motherboard is causing the failure of these devices?

Any help would be appreciated

> 1. Exclamation point on "Microsoft UAA bus driver for High Def Audio"
Win Xp requires the Sp2 and Sp3.
Patches are part of service packs and are necessary for its work.

Here's an interesting thread:
http://forums.computers.Toshiba-Europe.com/forums//thread.jspa?MessageID=101337

> 2. "Unknown device" in USB controllers but no exclamation point - USB devices not plugged in.
The internal webcam is connected to the USB controller then perhaps, you add the webcam software.
Otherwise this could have something to do with the USB port defective

Tags: Toshiba

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