No, I didn't put the battery in the wrong way, and I tried putting the old battery back in and that didn't work either. I also tried turning it on without the battery and it does the same thing. I am...

I replaced the cmos battery a few days ago, and now the laptop won't boot. The power comes on, the USB ports get power (mouse lit up), fan starts, HD starts for a few secs, then stops, screen stays...