If it makes no difference then as I cannot find a circuit diagram of the motherboard I'm sorry that I cannot help you any further. If the external monitor displays OK then there will be a problem with either the video cable or the screen. Now add one stick of memory in Slot A1 and power on. This is good, it means the processor is functioning and the motherboard is good so far.
#Laptop screen lights up but no picture code
You should get a beep code that tells you there is no memory. Use an eraser to clean the metal contacts on the battery and the battery bay. Now connect the power cord and turn the PC on.
You could try disconnecting the video cable from the motherboard and see if this has any effect on the display to the external monitor. Shut down the laptop and close the LCD screen. To find out if your PC supports this, select Settings > System. (If the slider isnt there, see the Notes section below.) Some PCs can let Windows automatically adjust screen brightness based on the current lighting conditions. Fix for Sony TVs Bravia KDL- distorted lines in picture screen clicks on. Since the display on the external monitor is 'glitchy' and there is no display on the laptop screen, there must be a problem either with the output from the GPU or the motherboard. Select the Network icon on the right side of the taskbar, and then move the Brightness slider to adjust the brightness. Some sound is present but no picture is present then it shuts itself down. You haven't said that there are any error beeps on startup, therefore it is assumed that the GPU is being detected OK by the BIOS. What were you trying to repair? You never did say.Īccording to the specs for this model HP Pavilion Sleekbook 15-b142dx (assuming that this is your model) there is a separate GPU mounted onto the motherboard (AMD Radeon HD 7500G Discrete-Class graphics)