Caps lock blinking 5 times slower and 3 times faster.

[Kasabian1]

I am installing the bios in laptop. When restarts  black screen is there and caps lock blinking.

[Dragon-Fur]

@Kasabian1 

The Dreaded Blinking light condition.

Document explains the codes and "blinks" and provides information for known solutions

Readers with Notebook computers:

HP Notebook PCs - Computer Does Not Start and Emits an LED or Beep Code

Excerpted from the document

5.3 (blink)	System board	The embedded controller times out waiting for the BIOS.	Remove all accessory devices from the notebook. If the error code persists, contact support for possible repair.
5.4 (blink/beep)	System board	The embedded controller times out waiting for the BIOS to return from system board initialization (end of POST).

For those reading with Desktop Computers:

HP Desktop PCs - Computer Does Not Start and Emits an LED or Beep Code

Device Home Page - References and Resources – Learn about your Device - Solve Problems

NOTE:  Content depends on device type and Operating System

Categories:  Alerts, Warranty Check, HP Drivers / Software and BIOS, How-to Videos, Bulletins/Notices, How-to Documents, Troubleshooting, Manuals / User Guides, Service and Maintenance Guide (Replacement Parts and Procedures), Product Information (Specifications), more

When the website support page opens, Select (as available) a Category > Topic > Subtopic

HP Notebook - 15-db0186au 

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