Unfortunately, I don't think re-installing is going to help. (I hope I'm wrong) The fact that it works for a short time and then stops indicates interference of some kind. Not sure where to go with this, but i'll not throw in the towel just yet!
Would you please download
Autoruns for Windows unzip it somewhere and run the executable. The first display is the 'everything' display. Open the file menu and select 'export as' Once done, post the txt file here as an attachment.