click start control panel administration tools computer management device manager scroll through all of your devices
if you see a yellow question or exclamation mark ? ! or a red X you will need to update the drivers for this device right click select update driver/reinstall driver
if you can see your usb device but its not working scroll to Ports(Com&Ltd) right click to update driver
if you computer came with a motherboard disk the drivers could be on it
or you might have to download them
rather doing a driver hunt which can take hours
http://download.cnet.com/slimdrivers-free/3000-18513_4-75279940.html
it might take some time being a freeware driver solution
note: it will find all of your outdated drivers
this is a free driver solutions they will automatically search for and find the correct driver also at cnet http://download.cnet.com/2000-20_4.html on the home page you should see a search tab just type in what you are looking for IE: motherboard name sound drivers you might have to try a few times to get it right
http://download.cnet.com/drivermax/3000-18513_4-10572602.html
Windows 2000/XP/Vista/7/8 free driver program
http://download.cnet.com/drivers-for-free/3000-18512_4-75548155.html
Windows XP/2003/Vista/Server 2008/7/8 free drivers
http://www.downloadcollection.com/device_doctor.htm
Device Doctor is a freeware Windows application that scans your computer hardware and checks to see if there are new driver updates available for your devices. It also locates drivers for Unidentified Devices in the Windows Device Manager. This tool was designed to be very simple and easy to use
http://www.innovative-sol.com/drivermax/ free program, paid update available
hope this helps
Besides using an anti-virus, also scan for Malware/spyware:
http://www.malwarebytes.org/mbam.php
Malwarebytes is as the name says, a Malware Remover!
Download the Free Version from the link above.
Download, install, update and scan once a fortnight..
How to use Malwarebytes after it is installed and Updated:1. Open Malwarebytes > Click on the Update Tab across the top> get the latest updates.2. On the Scanner tab, make sure the the Perform quick scan option is selected and then click on the Scan button to start scanning your computer 3. MBAM will now start scanning your computer for malware. This process can take quite a while.4. When the scan is finished a message box will appear5. You should click on the OK button to close the message box and continue with the Malware removal process.6. You will now be back at the main Scanner screen. At this point you should click on the Show Results button.7. A screen displaying all the malware that the program found will be shown8. You should now click on the Remove Selected button to remove all the listed malware. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.9. When MBAM has finished removing the malware, it will open the scan log and display it in Notepad. Review the log as desired, and then close the Notepad window.10. You can now exit the MBAM program.hope this helps
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