Hi, a few days ago I started noticing that in order to power up my dell xps 8100 I had to press three or four times the power button, since I had no response after the first or second push, but once it responded it would boot without any issues. But since today I've really had a hard time powering it up, the button doesn't respond, I have to click way to many times, and I really don't know what the problem is.