Hi guys! I have got similar problem with my DELL XPS 15 l502x - high DPC spikes. Interesting is that when I have spikes and change my Power Plan spikes disappear for short time - then they come back. Can you have a look at my etl file and advise me what to do? Thanks! Here is url : http://www.speedyshare.com/S4Cqj/DPC-Interrupt.etl