Any device I insert into any of the four USB ports on my laptop results in a bubble from the task tray popping up informing me that the "usb device cannot be recognized". The only thumbdriveI've tried to use freezes the laptop as well. This is a recent situation. USB devices used to work. I can't recall an incident that'd cause the USB ports' malfunction. From the laptops first day with me it had XP pro installed (by me) in place of vista basic. Toshiba doesn't provide XP drivers for this laptop model or XP compatible bios updates. I've yet to try vista and play with power settings and drivers.
The cmos doesn't provide an option to disable/enable USB devices/ports.
Removing all unknown USB device drivers (hidden and shown) didn't fix the problem.
Reformatting the computer didn't fix the problem
Updating to the most recent bios didn't fix the problem.
I have the same problem with my laptop her is what I tried:
Un-installing all USB drivers
Unplug from wall and removed the battery
Waited 30 mins (3 & 4 I read elseware)
Powered back up
I ended up doing a factory reset
nothing has worked so far
Also the front USB device has stopped working altogether (after putting a device in it the 'not recognized' ballon does not show up but the device doesn't work)
I also noticed that when going into the device manager and clicking properties on Unkown Device under the USB section it says that no driver is installed
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The most likely cause is that the keyboard needs a new battery in it, inserted on the underside. After that it may be that the small keyboard comms dongle in a USB port is not making proper contact. Pull that out and insert it a few times.
Depend what model "this tablet" is. Generally tablet chargers have a USB connector at the wall plug end , plugged into the wall charger and a mini usb or proprietary connector at the tablet end. The USB connector can also be plugged into a USB port on a computer or other device. Charging rate will depend on how much current the device can deliver to the USB port, they are not all the same.
The biggest problem with tablets and phones is the micro USB socket. They are easy to break if you put them in the wrong way round and it is not always easy to see if they are connected correctly.
Check the USB plug and the the tablets socket are not damaged.
Check that USB keyboard works in another device and that another USB input device works in the tablets USB socket.
I am suprised it works at all. You state you are using Android 2.2 yet USB hostmode was only introduced with Android 3.1
There are some apps in the play store like USB device info which may help. For proper debugging you need an APK which is not for the average user. http://visualgdb.com/tutorials/android/usbdebug/
But cables and plugs are 98% of the problem
Same problem happens to me when I insert something into one of my computer's USB ports, such as a flash drive, it doesn't get recognized. This happens with things other than just a flash drive as well, like my iPod. I have numerous USB ports on my computer, but they all act the same. I'll insert a flash drive and even after it's not automatically recognized, I'll go into "My Computer" and it shows all the "Removable Disk" drives as being empty. I'll click on one and a prompt will come up and say, "Please insert a disk into drive F" or whatever drive I happen to click on. I've tried this with all the drives but to no avail. http://mhelpdesk.com/field-service-management-software/
Most laptops cannot boot up from a USB device/hard drive. Check the BIOS configuration to see if the USB is available in the boot order devices. In this case the USB driver is not available for use until Windows is installed. If the USB is not available in the BIOS Boot order then you need to reinstall Windows using the installation CD in the CD drive..
I insert my
Red bridge multi in one memory card reader and a 2gb M2 card(with data) in the right slot yet I receive a please insert disc?? when I click the removeable (H)of Red bridge(which is detected by my pc)