Equium A200 USB ports have stopped working

Hallo, I am DESPERATE for help, please.

I have a Toshiba Laptop Equium A200 series, with Windows 32-bit.

My USB ports are giving me major problems.

I use a USB Internet Modem on several computers, and it works fine on all computers, including Toshiba.

A month ago, the USB Internet would suddenly and continuously disconnect itself from the Internet, when I use it in USB port one. When I use it in USB port two, it doesn't register anymore. The port simply doesn't register the device.

Both USB ports work fine when used by other USB products.

I had always used USB Internet in USB port one, with a cooling fan for my laptop, in USB port two. Now, when I insert the cooling fan, USB Internet disconnects itself, and won't register, unless i remove the fan, and remove, and re-insert the USB Internet.

I have done the following:

1. Run an anti-virus
2. Uninstall, re-install, and update all drivers for USB ports, chipset famlies, Internet Modem, EVERYTHING.
3. I've checked with my Internet provider, the problem lies with my PC, not them.

I don't know what to do, I am fed up.

PLEASE help!!!

 

There is a possibility that some usb “irq” settings are conflicting.

Try this program USBOblivion

Disconnect all usb devices RUN THE PROGRAM at the bottom of the
program click “do a real clean”

Restart your machine then reconnect all of your usb devices one by one.

http://www.freewarefiles.com/USB-Oblivion_program_104234.html

 

Thank you, something back. I have tried this, but it didn't work. Any other suggestions, perhaps?

 

You could try to see in the device manager section of the control panel, and
see if there are any conflicts removing all usb related files by right clicking
on each file may help if there is a conflict. your machine will at reboot try to restore
the files.

I have included a link to a service/disassembly manual site.

It looks like you can replace the usb board.

http://www.doctor-book.ru/sevicemanual/TOSHIBA/Satellite a200.pdf