Please do the following:
- download a free anti-virus for testing purposes: Free AntiVirus
If using Windows 8, enable Windows Defender and the Windows Firewall instead.
- un-install the Norton
from your system (you can reinstall it, if so desired, when we're done troubleshooting)
- remove any remnants of Norton
using this free tool: http://us.norton.com/support/kb/web_...080710133834EN
install and update the free anti-virus (if using Win8, enable Windows Defender), then check to ensure that the Windows Firewall is turned on.
- perform a full system scan to ensure that no malware has snuck onto your system while the anti-virus was malfunctioning.
- check to see if this fixes the BSOD's
run more than 1 anti-virus, firewall, Internet Security/Security Center application at the same time.