HP 250 G3 not booting

[moti3027]

Hi 

When i turn on my laptop,  the screen is black (also in another screen).

It looks like the computer is trying to boot. but without success. After a few seconds the LED power turns off and on again. And the computer tries to reboot.

the CAPS LOCK is not blinking.

thanks

[WAWood]

@moti3027 

Since this is an older laptop, this issue is often due to a failing drive. So, let's check that first, because if it is failing, it would need to be replaced and there is no point then in doing anything else until we confirm that.

If your PC is new enough to support UEFI, you can use these steps to test the hard drive: http://support.hp.com/us-en/document/c00439024

If not, to check the drive you have to follow these steps:
1) Press Esc key repeatedly, several times a second, while rebooting the laptop. Do NOT hold the key down, just press it over and over.
2) Eventually, you will see an HP Startup Menu
3) Press the Function key for testing the hard drive (usually F2) and let it run.

[moti3027]

the display is black.

there is no BIOS.

[moti3027]

I replaced the mother board. (CPU is gone)

Work propely.

Thank you.