I may be able to provide some simple advice on your situation. If not, the more experienced members here will step in to help out. In order for us to help diagnose your system and provide advice we will need you to provide some basic info, using the following instructions:
Please Publish a Snapshot using Speccy, following the instructions at the following site- http://www.bleepingcomputer.com/forums/topic323892.html/page__p__1797792#entry1797792 , taking care to post the link of the snapshot in your next post.
Please also download the MiniToolBox program from the following location: http://www.bleepingcomputer.com/download/search/?keyword=minitoolbox save it to your desktop and run it.
Checkmark the following checkboxes:
List last 10 Event Viewer log
List Installed Programs
List Users, Partitions and Memory size
List Minidump Files
Click Go and paste the content into your next post.