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‎04-16-2025 03:16 AM - edited ‎04-16-2025 03:24 AM

HP Recommended
Product: HP ProBook 4540s Notebook PC

Hello,

 

I have an HP ProBook 4540s which powers on, but the screen doesn't. It outputs an error code on the caps lock key by blinking roughly once a second and without any pauses in between. I have checked the error codes and I'm not seeing which code is it. The laptop booted up previously even in its current state and all components where working fine, apart from it being slow. I have checked the DC jack, the power brick, the screen, the ram the hard drive. All of them are working. I just can't figure out why it is not working.

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