Laptop Starts With Blank Screen
The laptop starts with a blank screen. The laptop stays on but no image appears on the screen even after a few minutes.
1. Backlight failure.
2. Memory failure.
3. Motherboard failure.
Possible troubleshooting steps and repair solution:
First of all, take a closer look at the screen and make sure that the screen is really blank. Look under a bright light. If you can see a very faint image, most likely it’s either bad inverter or faulty backlight lamp. Try replacing the inverter board first and if it doesn’t help, replace the LCD screen. In a case of the backlight failure, you still should be able to use the laptop with an external monitor attached to the VGA port.
If the screen is completely blank and has no image at all, check the memory modules. It’s possible that one of the modules has failed. Try reconnecting memory modules. If you have two modules installed, try removing them one by one. Test the laptop with each modules separately. Try replacing memory with another known good stick. If manipulations with laptop memory do not help, it’s likely that your problem is related to the motherboard.