Yeah just re-install the driver from the phone and it sounds as though you may need a little routine maintenance.
Maintaining your computer
1. Left click on C drive> properties/run windows disc cleaner
2. Download Ccleaner from here: http://www.filehippo.com/
3. Install Ccleaner and run the cleaner top left, then run the registry cleaner below it on the left. you don’t need to backup the registry
4. Left click on C drive> properties>Tools>disc scanner or in the case of Vista it’s called something else, but it’s the top tab you click on> Prompt the scanner to scan upon next reboot and REBOOT COMPUTER)
#(Prepare to wait up to an hour)#
5. After Disk scan/Disk check has finished run windows Disc Cleaner again, Ccleaner again and registry cleaner again.
6. Then you must do a DEFRAGMENTAION of C drive which is START>ALL PROGRAMS>ACCESSORIES>TOOLS>DEFRAGMENTATION.
Additional options:
You can also run adware 2008: http://www.lavasoft.com/single/trialpay.php
AVG Anti-virus: http://free.avg.com/download
Download and install this browser: http://www.mozilla-europe.org/en/firefox/
Flash blocker https://addons.mozilla.org/en-US/firefox/addon/433
Script blocker https://addons.mozilla.org/en-US/firefox/addon/722
supper add blocker plus. https://addons.mozilla.org/en-US/firefox/addon/1865
Flash player: http://www.adobe.com/software/flash/about/