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Check the driver status of the USB. You can do this by accessing the Device Manager. For users using Windows XP, just click the Start icon. On the Run box, type devmgmt.msc. You can also do the same with Vista.
Next thing, check for devices with an (!) sign with a yellow background. These devices needs driver update or correct driver should be installed.
For a start, you can do a Windows Update. Click Start, All Programs, and then Windows Update. This will download patches for your system.
Go to Control Panel, System, Hardware, and Device Manager. Look for serial ports/USB ports. Verify installed and active. If not, go to Bios 'setup' at start-up and activate from there. Be sure to save and exit even if you change nothing--otherwise everything returns to default.
Are you using XP? If so: Here is what you can do to refresh the USB ports: 1. Right click MY COMPUTER 2. Select PROPERTIES 3. Select HARDWARE 4. Select DEVICE MANAGER 5. Select UNIVERSAL SERIAL BUS CONTROLLERS 6. Right click on each USB CONTROLLER and select Uninstall 7. Uninstall all entries 8. Reboot your computer 9. As your computer re-boots it will reinstall all USB connections it detects THEN, when all other USB items have been configured and connected by the system, you then should try connecting your USB device.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it. Thanks, Joe
Try booting your computer from CD ROM with the OS CD/DVD already inserted and when prompted just try repair. If that does not work re-install the same on the same 'partition' assuming it to be C by deleting the the windows system files only. While doing so keep the internet on and immediately after the basic version of the OS is installed and the m/c boots-up for the first time, go to the official website and download the latest drivers for every component like toch-pad, keypad, display, audio, etc.(i.e. almost all the drivers)
Sounds like a hardware issue. I would guess that there is a bad connection between the usb's and the motherboard. If you are comfortable dismanteling the laptop and re-soldering the usb's than give that a try, but I would recomend you give it to a pro.
Here is a link that explains the process.
Is your laptop still under warranty? I would go to the manufacturer first if it is. If not: the system clock is run by the CMOS battery. When low will cause a host of problems. Change it and let me know if this fixes your problem.