Hp screen flashing red green blue

[abdo3200]

Hi
I have laptop flashing red and white and blue and green after press power botton
I try to change Ram , CPU , Lvds cabel , screen and bios
And can't slove proplem
And power system works good 3.3v ,5.1v and have 3.3 on power button and have 3.3v on bios
Please help me haw can I fix it proplem

[mcplslg123]

Re: Hp screen flashing red green blue

screen flashing those multiple colour in sequence means no lvds signal. Check voltages at lvds connector and match with schematics.