* Follow the good advice given by badger906 if you are getting BSOD's.
* Please list ALL your current Security Software.
* Did your new computer come with a preinstalled Anti Virus?
* Is so how did you remove it from your system?
* Have you checked in Event Viewer?
Type eventvwr in search.
Go to the Windows Logs > Application / System > in the left hand column.
Note anything in red that relates to the problem you currently experience.
Please record the event ID, and the Source Code and tell us what they are.