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Michael Poschner Posted on May 11, 2007
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USB Controller not recognized after crash

My laptop is not recognissing the USB controller and am unable to use any USB device attatched to the laptop, can someone please help me to try and fix this problem? Thanks

  • Michael Poschner May 12, 2007

    Thanks babb,
    I tried it and it didn't work microsoft xp won't recognise the driver for the USB controller and I can't find the driver in the system recovery disks nor on the net, and to be honnest it's really frustrating, any other suggestions?


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  • Posted on May 12, 2007
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Joined: Mar 17, 2007

Well we can try something! First you gotta go to Device Manager! A quick way to get there is Start->Run type devmgmt.msc and press enter. If that don't work then Right Click on My Computer then click properties! Then Click on the hardware tab then the Device manager button, Under Universal Serial Bus Controllers if there are any devices with a yellow exclamation then right click on the device and click uninstall. then right click on any device and select Scan for hardware changes! This may or may not solve the problem, get back to me if any complications! If there isn't any device with a yellow exclamation or there aren't any Universal Serial Bus controllers get back to me! regards, babb

  • Anonymous May 13, 2007

    Also, you can update your operating system via Windows Update.

    There could be a glitch with the SIS chipset and Windows.
    Install all the critical updates and any available driver updates(when asked to do express or custom, choose custom)!

    Also check out this Microsoft site for more info!

    hope this works!



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Have several Simpletech 250 GB drives. All are consistently recognized by my Lenovo laptop but one. That one problem drive will rarely get recognized about 1 in 200 tries on my Lenovo laptop. The problem...


You don't say how all these devices are connected at any one moment in time, whether you use a USB hub to plug multiple devices in simultaneously or whether your otherwise detailed and very good description of the background to the fault applies even when nothing else but the problematic drive is plugged into the laptop, or whether you use the same or different USB cables with the different drives and the different computers. It's worth eliminating a USB Port fault or a USB Hub overload or a USB cable fault as the potential causes of the problem, if you have not already done so.

USB is a relatively limited technology in Data Transfer Speed terms and is susceptible to Data bottleneck problems leading to read/write errors in external drives.

The Simple Tech case contains a controller card. The Simple Tech controller card may be faulty or failing due to an accumulation of such read/write errors and is probably not communicating well with the Lenovo's Operating System. Because of Temporary Files and Error Reports created whenever a read/write errors occur, The Lenovo 'remembers' the problematic drives electronic signature from the last connection and also remembers its response and therefore defaults back to the same reaction most times you connect the drive in question. The drive has no 'history' with the Dell, so no problems arise when it's connected there. The other drives might be mechanically identical, but the internal controller board of each has a different electronic signature.

The controller card has a chip on it that contains information in it that identifies what type of device it is to your operating system and then invites the Drivers for the device to start intermediating between the device and the operating system. Some error in the interface between that chip and the Lenovo is causing your problem.

It is purposeless to continue using the problematic SimpleTech Enclosure with your Lenovo Laptop. You have already alighted on the best, simplest and most practical solution -re-house the problematic drive in a good quality, well ventilated new enclosure. The controller in the Eagle case also has no 'history' with the Lenovo, hence the clean response.

For intellectual curiosity, you could swap the hard drives around in two of the Simple Tech cases to see what happens.

Also there might be a Firmware update for the problematic SimpleTech Case that might flash and overwrite the Controller card main chip. I am unable to check this for you as I would need the Drive's part Number. This is the relevant site:

I hope this helps.

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My USB can't recognized. The recommendation is this: "Try reconnecting the device. If Windows still does not recognize it, replace the device." The device works on other computers or laptops,...


Here are some steps which you can try. It is not always that the device is defective. Maybe the generic USB controller/driver needs to be uninstalled then reinstalled or the USB port itself is broken.

- Go to Device Manager -> Right click USB Controller -> select Scan for Hardware Changes.
To go to the Device Manager in xp (Start -> Run -> type devmgmt.msc -> press Enter or OK), in Vista and Windows 7 ( Start -> type devmgmt.msc on the start search box -> press Enter)

- Access BIOS setup (either Del, F2, F10...depending on the laptop brand) then look for the option to restore default BIOS settings.

- Go to the Device Manager and unistall everything under the USB Controller then restart the unit. It should automatically reinstall the driver. Try to use multiple USB devices if possible.

- If the above steps will not work, you're USB port may be defective already.

I hope this helps. Please reply if one or any of these steps resolved your issue for the benefit of other users having the same problem as yours.



It sounds like you have a USB port(s) problem. Did you check them in Device Manager to see if they work ok? Did you try a different usb cable? You surely need Windows Service Packs installed in order to get USB 2.0 compatibility and speed. Without the service packs you will only get USB 1.1 compatibility and speed. But of course, the USB controller must be a USB 2.0 Controller before it can attain USB 2.0 compatibility and speed. There is no software that will make a USB 1.1 controller a USB 2.0 Controller. If your current USB controller is only 1.1 compatible, you will need to obtain a high speed USB 2.0 controller card or bus card. The easy way to tell if the current installed usb controller is 2.0 is to open Device Manager and click the + button next to USB Controllers. If you see the word "enhanced" anywhere beneath, then the controller is a USB 2.0 controller.

My drive crashed so i installed a new hard drive, and used the disks provided to install windows xp,and drivers, but I'm noticing that the following drivers did not install, the base system device,...

Try to manually update the drivers.
Go to Settings/Control Panel/System
Hardware tab
Then Device Manager
Click on one and update.
Let the OS search the CD with the drivers.
(You may have to navigate to the correct directory)

If this fails you will have to go to the DELL website and download the drivers for your machine.

Hope this helps!
Good luck!

Cant recognized on XP

If you are using an USB extension or an USB external hub, get rid of it.

Try plugging the MP3 to a different USB port.

Try unplugging AC charger, and removing laptop batter for ten minutes, sometimes this can fix problems caused by accumulation of electrostatic charges on USB controller.

If that does not solve the problem, test a different USB device on the same laptop, and test the MP3 on a different computer. Either one may be faulty.

If the problem is the laptop you may fix it by removing and reinstalling USB root hub on hardware devices in Control Panel.

Unable to get drivers

hi, for installing the said devices, you have to use the driver CD of the laptop. If you have not got the motherbord driver CD contact the dealer.

thank you

Computer not recognizing any usb devices

Well, appears that your configuration can handle 4 GB of memory. I checked the Acer website for upgrades for your model, and nothing appears to jump out which could solve your problem. A few appear to be possibly helpful, but some are for XP, not Vista. Upgrading "launch manager" might be a good thing.

However, Belarc tells me that on my Acer 5630 i have listed under "Bus adapters" the following:
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27C8
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27C9
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27CA
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27CB
Intel(R) 82801G (ICH7 Family) USB2 Enhanced Host Controller - 27CC
And, under "other devices", i have a USB Root Hub (5x). Obviously, the two match. I go to device manager to check them out, finding them under 'univesal bus controllers", to see whether they are all working properly, and and they are. In addition, opening "system devices" reveals something called a "plug and play software device enumerator", and that checks out to be working fine as well. Check your equivalent out to see if you find a problem to fix. Hopefully you will. Let me know how things go.

SanDisk Cruzer Micro 2 crashes my system!

Hi marykins,

When you say 'crash' does this mean the system reboots, freezes up entirely, or blue screens?

I've seen similar issues when the USB 2.0 host controller isn't enabled in the System (BIOS) setup. Many devices, such as USB mice and MP3 players and even flash drives, will show up and some will function, but if the USB is required to act as a host controller, devices such as external hard drives and (sometimes) flash drives will either not show up at all on the computer or will crash it.

I'd suggest first looking in the BIOS setup to make sure that both the USB host controller and USB legacy support are enabled.

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