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Troubleshooting No LED Lights Glow During Startup or Boot

There are many reasons that a computer does not startup or boot into the Windows operating system. If your computer will not start or boot, you will see or hear symptom to indicate the general area of the problem. If you are not sure what the problem is, see Overview of How to Troubleshoot Problems When a Computer Does Not Start Up or Boot Properly.
Startup Symptom: LED lights do not glow, display is black, computer does not start
Use this document if the notebook does not start, none of the LEDs glow, there are no beeping sounds, no operating sounds such as fan noise or the hard drive spinning, and there are no other indications of power to the computer when the notebook power button is pressed.
The cause of this no power problem may be a failed AC adapter or power cord, a discharged or damaged battery, or a failed notebook system board component. Damaged components may require an HP certified repair. You can use this document to identify the cause of the startup no boot problem.
DO THIS FIRST - Perform a hard reset
If a PC suddenly fails to boot properly, you should perform a hard reset as the first procedure.
  1. Disconnect all peripheral devices and remove all USB devices and media cards. You want to test the computer not the accessories!
  2. Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds.
  3. Reconnect the AC power adapter (but do not connect the battery), Press the Power button, Look for glowing LEDs near caps lock and num lock keys, and Listen for sounds of a disk drive and fan turning.
Actions to take after performing hard reset
If the LEDs glow but the computer does not start, see Troubleshooting Black Screen Displays with No Error Messages During Startup or Boot.
If no LEDs glow, power is not being applied to the computer.
Figure : Typical Location of LEDs
The existence and location of LEDs is different on all computers.
Figure : Power indicator light.
When the AC adapter is connected, the power LED, located near the power icon (displayed as a lightening bolt on most PCs)
, will glow to indicate the battery is charging. See the User Guide for the exact location of LEDs on your computer. Every notebook has specific power requirements. If the adapter does not provide enough power or the power plug does not connect firmly, the computer will not operate properly.
Common actions to resolve no power issues
If the computer does not start, the LED lights do not glow, and the display is black, you can perform one or more of the following actions to resolve the no power issue.


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