I just changed the thermal paste in my laptop and now when I press the power button, the power light comes on for three seconds and goes out. I've changed thermal paste a few times before on a different laptop without this problem. The pc doesn't power up (no fan or other lights) it's just the power light that comes on for a few seconds. It worked before I replaced the paste and I'm thinking something may have come loose. I've checked the fan's seating multiple times. Also when I plug it in the charge light doesn't come on. I've tried taking the battery out, unplugging it and holding the power button down. It doesn't work just plugged in without the battery or vice versa. I've reseated my ram even though I didn't mess with it. the laptop is ASUS n50vn, I've googled everywhere for solutions but couldn't find anything else. I really don't want to disassemble it, but the only other thing I can think of is a loose wire somewhere I can't reach without completely taking it apart. Any clues as to what it could be?