This laptop was working fine yesterday.  Now it won't boot. I can't make head nor tails of the flash codes, but I know the first one, Num Lock, just briefly lights up.  The other two lights stay lit for about 6-7 seconds and then it powers down.  I haven't done anything to the machine.  I'm using the battery and power adapter.  Same thing happens when I use either one or together.  Sounds like some type of hardware failure.  Any help would be appreciated.

Paul