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Toshiba L505D-S5983 No USB or Sound


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#16 MrBruce1959

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Posted 08 April 2014 - 09:50 AM

For what it is worth. Anytime a BIOS update is performed for any reason, the BIOS setup utility should be entered and an option to load system defaults should be executed and saved using F10 option.

 

A BIOS update, if that is what was performed, can effect hardware settings, including but NOT limited to, making a piece of system hardware not function anymore.

 

In the case of USB, USB is control via the system BIOS, it can be manually disabled there, as well as an update related to the BIOS  firmware also doing so.

 

With laptops, most hardware is built into the system and is also BIOS dependent. Desktops have similar configurations where USB can be disabled via the BIOS setup utility. On board is the same, with laptops it is part of the BIOS/motherboard such as on board audio is with desktops.

 

My point is, if a piece of hardware is disabled via BIOS, driver installation will have no effect, because if the hardware is disabled via the BIOS, the driver package can not acknowledge if the hardware is even there to begin with.

 

The BIOS setup utility should be entered and checked for setting related to non functioning hardware, such as USB and laptop's built in audio chip.

 

A simple entry into BIOS and loading system defaults might correct the problems you are experiencing. Often the option on how to load system defaults is displayed at bottom of BIOS menu screen.

 

Bruce.

 

Edited: added Bios firmware for clarity.


Edited by MrBruce1959, 08 April 2014 - 09:59 AM.

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