I have an HP Laptop N5425 and I am having boot up problems as follows. When I turn it on, it just keeps cycling on ond off. Usally after doing this for a long time it will suddenly start booting. However, it only gets to the HP Logo screen and then it locks up. At the bottom of the screen it says hit ESC for boot sequence, F2 for setup, etc.... and then it just freezes there (i.e. no keys are functioning). However if I am quick and hit one of the keys right away it attempts to do the next step (e.g if I hit F2 I will see a message telling me setup is starting, but then it freezes). One other thing even though I have 2 batteries they never charge up and the computer wont run at all with them. If I use the AC the battery light starts out Yellow and later turns to red(?). I have also tried removing the battery and just using the AC but it still just freezes up. I would really appreciate any suggestions.