HP probook450 g1 not turning on

[Andys86]

So, I have got a HP Probook 450.
Not turning on, once its plugged in the LED on the side blinks, but nothing happens when u try to turn it on.
What I have tried so far ?
Cleaned the laptop inside out
Replaced CMOS battery
Took out battery holded down power button 30 seconds or longer.
Nothing has worked so far.
It worked in the morning but still had no display and now it has stopped turning on altogether.
Any solution to this ?
Help is greatly appreciated.

[Z_ap]

Thank you for the post and welcome to HP forum.

I understand you have concern with laptop powering on but there is no display.

Here is a link you may follow for the step by step troubleshooting for no display issue.

https://support.hp.com/in-en/document/c03518165

Kindly check with an external monitor and check if the display comes on the external monitor. (FN+f4)

If the issue still persist it might be an hardware issue. You may contact HP support team according to warranty plans you have or visit to nearest authorized service center for the repair.

[Andys86]

Hi, 

Thank You for your answer. However i might have failed to mentioned that the laptop isn't powering on at all. No fans run or anything. 

Just the LED on the side where we plug in the power adapter blinks continuously. As i menitoned, i have tried changing the CMOS battery, holded down power button, Cleaned out the entire laptop including the motherboard. 

Thank you