Please reboot and tap "F8", then select "Safe Mode with Networking", from there, download and run the Norton Blaster Worm Removal Tool: http://www.symantec.com/security_re...
If this does not, work, Download Rkill from here: http://download.bleepingcomputer.co... run it, then try again. (Note: Do not reboot once Rkill is run, as this will cause the malicious process to respawn).
I would also download Malwarebytes Anti-Malware and run a scan: http://www.malwarebytes.org/mbam.php
Please post a log after running Malwarebytes.
Let me know if this helps you, please.
Helpful tips before getting started: http://www.computing.net/howtos/sho...