Technical Support hp 650 newton cr hr hpc mv

[samemuro]

pc turn on with blank screen with no hp logo but when you plug usb keyboard num lock and caps lock are on means the computer boot correct but nothing on the screen displayed

 

[Ahmad Safari]

Hello
Did you program the BIOS?
RAM and RAM slot serviced?
Separate the peripheral parts from the board and test the board with RAM and CPU.

 

[samemuro]

Hello
Did you program the BIOS?
RAM and RAM slot serviced?
Separate the peripheral parts from the board and test the board with RAM and CPU.

Already did the above all

 

[Ahmad Safari]

Take the voltage.
If all the voltages are available, first remove the audio and network ICs, etc., which have no effect on the image of the device.
If the problem is still not solved, check the cold soldering of the chipsets.