One day, out of the blue, I started getting this message whenever I plugged anything into my usb ports on my laptop. These devices work fine on my desktops so they are working properly. I reinstalled window, with no results, its still doing it. I found a thread online saying that disconnecting the power cord and battery for a while usually did the trick, but this did not work for me either. Any ideas?
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USB device not recognized???!!!
- Thread starter thelead
- Start date
For me it looks like there is not enough power, since you have made a clean install and it didn't soilve the problem and the devices are working with other PCs. dunno how to solve it though...also you should check BIOS that you have USB enabled there.
Okay, so I uninstalled the usb controllers and hubs, plugged in my flash drive, then restarted the laptop. Once everything reloaded the flash drived worked, but only at usb 1 speed. Now thats better than nothing, but after a few usages of the drive the laptop wouldn't recognize it anymore. So now I know for sure that it isn't bad usb ports. Any thoughts.
Phandalyon
Guest
- Joined
- Jun 12, 2001
- Messages
- 5,839
It is most likely a lack of power. It could be that your battery weakened over time and is now no longer capable of running a USB device. You can test this by removing the battery and running just off AC power for the laptop (if capable). IF that turns out to be the case, a new battery or a self powered USB hub are probably your best bet.
Bear in mind that I am not sure if laptops can or should be run without a battery in them. But I am making an assumption that the AC power is trying to recharge the battery and not actually powering the computer, so that is why you are not getting power from it, and I am also assuming that the battery is no longer capable of holding a full charge. I am making a lot of assumptions, so if you are not comfortable trying my suggestions don't.
Bear in mind that I am not sure if laptops can or should be run without a battery in them. But I am making an assumption that the AC power is trying to recharge the battery and not actually powering the computer, so that is why you are not getting power from it, and I am also assuming that the battery is no longer capable of holding a full charge. I am making a lot of assumptions, so if you are not comfortable trying my suggestions don't.