Hello, has anyone that owns a 17" Asus Laptop (it's about 4 years old), and it will occasionally with Windows 7 get a blue screen (no error or anything) then shuts down. Then often when starting it up, I have to take the battery out, also unplug the power cord, then hold the power button down for 1 minute, then it will finally start up okay. Is this a Power Supply problem for this laptop or something else causing this? What can be causing this problem? Thank you for anyone that has ideas?