1 flash of scroll/caps lock - cpu failure? options? pavillion dv5

I read that one blink of the scroll lock / caps lock indicates CPU failure. True? Options?
I had taken out battery, unplugged and held down power key and it came back on, but after I shut the lid and tried to get back on later - just the blinks - now nothing will get it back on.

Hi,
This book shows you CPU's supported from day 1:
  h10032.www1.hp.com/ctg/Manual/c01597750.pdf
Regards.
BH
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