07-13-2016 09:51 AM - edited 07-15-2016 08:02 AM
Welcome to HP Forums! I have read your post and wanted to help.
I understand that the laptop starts with black screen and blinking LED.
Here is a document may help:HP Notebook PCs - Computer Does Not Start and Emits an LED or Beep Code
Let me know if it helps.
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07-15-2016 03:09 AM
07-15-2016 08:00 AM