a few days ago, my asus computer K42J played a war after 1942 normal shutdown, and then the next day after boot, found that the blue screen, and a little flower screen, forced shutdown, boot, again can not display, hard disk lamp, lamp power supply is normal, no boot logo, then look at the effect of the external monitor, found an external monitor can display properly asus logo, then start, after the blue screen, interface is as follows:

Then enter the safe mode, change the video card driver to VGA driver, can normally enter the system, the external display is normal, the built-in display is still no reaction, the driver changed to amd driver or blue screen, can’t enter the system.

suspected that the screen wiring was broken, so we took apart the wiring, and found that the wiring was normal.

to get the maintenance point, the master said the video card virtual welding…

so redo the video card, the problem is solved. Good is not the screen is broken, otherwise this book is useless ~~~~~ write down here, hope to meet the same problem friends can find some ideas.