I have an Acer Aspire 5551 notebook with 4GB memory and AMD Athlon II P320 at 2.1Ghz running Windows 7 64-bit. When I press the power button, the power light comes on, as well as the light within the power button, but the screen stays black, with the back light off and everything. I can hear the fan inside running, but nothing else seems to happen. It stays like this for sometimes 10, sometimes 20, and even 30 minutes before the screen lights up with the normal BIOS screen followed by the windows loading screen, etc. Once it starts booting, it works perfectly. It boots in about a minute once it gets going, and only takes a few seconds to load all of the start up programs in Windows. Help?