Problem solved with my system it is the harddrive.
I disabled the harddrive using device manager and rebooted the system. stuttering disapeared, it stutterd right fromt the beginning of the log in screen now its gone. I have enabled the drive again but disabled write caching on this device and that seems to work fine.. the HD works and stuttering is gone.

Hope this helps you guyes..
It's the seagate baracude drive 1.5TB. (see I did not trust Seagate to start with I have had several bad seagates over the many years I work with PC's) Very good experiences with Samsung though.