Acpi Tos1901 Driver Toshiba Satellite

Eventually, it was discovered that this particular device was installed as a part of the Toshiba Supervisor Password Utility. This SHOULD have resulted in a simple fix but Toshiba made this utility locked to a specific set of Serial Numbers.* This meant that if your laptop had a serial number that wasn’t in this set, you were out of luck. The program would refuse to install and the driver would not load. I tried to get an image of this, but not that I have the Firmware Linkage Driver installed, I can't seem to get it to bring up an error. Thanks for posting this PedroDaGr8. I installed Windows 7 x64 late last year and like many had the same annoying 'Unknown Device'.

After spending ages doing various Google searches and contacting Toshiba I was resolved to disabling it (like you say, it doesn't 'seem' to do any harm). My Toshiba laptop came with 2GB RAM (upgradable to 4GB) and Vista x86. I went for this model as it supports 4GB but what Toshiba didn't say, was they don't provide drivers for this model for Windows x64. After sending several e-mails asking how I was supposed to get 4GB RAM with Windows x86 and getting nowhere (Toshiba didn't want to know), I gave up. Caseware Idea Software on this page. Their response was that you can install 4GB RAM with Vista x86 and 'what's the problem only being able to use 3.2GB of it?'