Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Unknown Device in Device Manager/Show Hidden Devices

07 Jul 2013   #1

Windows 7 Ultimate 64 Bit
Unknown Device in Device Manager/Show Hidden Devices

I have a Toshiba laptop, model L505-ES5018. I had Windows 7 Home Premium 64 bit installed on here, but decided to reformat my hard drive using Windows 7 Ultimate 64 bit. After the reformat was finished, I ran Windows Update and it found several items to download and install for me. I noticed that it also found optional items to download and install for me, so after all the important updates installed, I ran the optional updates. After all of this installed, I checked Device Manager to see if there were any errors and I found nothing. I assumed everything was fine. I decided to check Devices and Printers and under my laptop icon, there was a yellow icon with an exclamation point on it. I decided to run the troubleshooting option when I right-clicked the gave me a solution to download a Toshiba password utility program, so I did that and nothing happened, even after restart. Same icon appeared. When I clicked on the icon a second time, I noticed that the model of my computer at the bottom of this window, changed from L505 to TIAS. I have no idea what this is. I decided to do another reformat on my hard drive. This time, I ignored the optional updates. I checked Devices and Printers again, the same icon appeared but the model of my computer said L505, like it should. There is something in the optional updates that is changing this. Could it be the Intel chipset driver that the optional update is pushing? I'm not sure. I went back to Device Manager, this time I clicked View and put a checkmark next to Show hidden devices, and I found it. In Other devices, it says unknown device. After right-clicking on this, and checking the driver details, I got a hardware ID that says ACPI\TOS1901. I did some research and was told that it could be my Intel chipset so I went to Intel and their website did an automatic scan of my system. It found a few things, so I installed them and rebooted the laptop. Doing this did not fix the problem....Is there a way to figure out what this device is? It doesn't seem to be hindering my laptop, but being a perfectionist, it is really bothering me. One thing I wanted to add, could it be a USB device? I noticed that I do not have my media card reader drivers installed....but yet when I put a media card in, it reads it just fine....or maybe the USB camera installed on the lid of the laptop? After checking my imaging device, it looks to be installed....has to be something.

My System SpecsSystem Spec
07 Jul 2013   #2

windows 7 home 64bit

Hi there ... You should Install the chipset Driver and also the Realtek Driver for your card Reader ... From the Toshiba website ... The Link is provided below

Satellite L505-ES5018 – Windows 7 32 and 64-bit Drivers Download
My System SpecsSystem Spec
17 Jul 2013   #3

Windows 7 Profession x64

That hardware ID should correspond to your Realtek card reader, which can be found from Toshibas official site Here
My System SpecsSystem Spec

 Unknown Device in Device Manager/Show Hidden Devices

Thread Tools

Similar help and support threads for2: Unknown Device in Device Manager/Show Hidden Devices
Thread Forum
Device Manager : Hidden Devices Tutorials
Device Manager - Unknown Device Hardware & Devices
Solved Unknown device in device manager Hardware & Devices
Unknown device in device manager (code: 28) Drivers
Device Manager - Finding Unknown Devices Tutorials
Unknown Device in Device manager. Hardware & Devices
Device Manager reports Unknown Device & explorer crash Drivers

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 03:48 AM.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App