One second appears on the screen when you turn on the HP computer, and then the screen is blank. But the machine started all the time. And dozens of seconds to hear the music on the machine has proved that the machine has been opened, but that is black screen, the most critical is the boot is also bright, indicating that the screen is not bad
Ha ha ha, notebook bar, after boot black screen?Set things up!!!Have a try：Find the Fn key and find the key that looks like the monitor icon:Press Fn first, press and hold!!!!Then press the button of the monitor Icon and try again and again!!The landlord tried not I said, this is my personal experience, the boot display, but the boot after the switch to the external display (even if not connected to external signals or interface), of course with the display is not bright!! Just switch as I say!!But you didn't start after a period of time will show, if this is not, I say, it is really a hardware problem, if the boot is bright, after it has been not bright, but I said this, I can't think of what else the situation!
This should not be a system problem, because the landlord boot display one second on the black screen, did not enter the system. This fault should be the notebook LCD screen high voltage bar, or the LCD screen inside the lamp problems, but the LCD screen, the internal circuit board is no problem.The main function of the high tension bar of the notebook LCD screen is to provide high pressure to the lamp tube inside the LCD screen, so that the screen can be bright, so that the data display can be seen normally! The voltage of line fault or fault components, the formation of instability, resulting in high pressure operation on the boot display screen!There is also a case of lamp problems, high voltage bar is good, can be normal to the tube to provide high pressure, but the tube may be aging or poor contact, resulting in high voltage leakage formation loop, also led to the screen is dark.Therefore, the landlord can boot properly, enter the system, the screen data can also be displayed normally, but the screen is not lit. Therefore, this LCD screen is still available, it can be maintained! No need to replace it all! Landlord if you do not have the warranty period, it is recommended to send the landlord to overhaul! If after the warranty period, looking for after-sale, the price is outrageous, the landlord can go to their own 2 hand computer City Notebook area to overhaul, multi run 1,2 home will be able to clear the problem of notebook!Replacement of high pressure bar, the price range of more than 100, you can negotiate. If it is the problem of lights, the replacement of new tubes, that is, tens of dollars can be done!
Common reasons for black screen are: first, the power supply chip damage, two, memory problems, three is, BGA (graphics card). North and South Bridge) chip weld damage, there is a dark screen failure, many netizens think is the phenomenon of black. Recommended repair.I can help you in BeijingNot in Beijing, I suggest you find a reputable, skilled repair business to help you overhaul
The power supply of video cards, when the system works in power saving mode, power management will provide a power solution for the graphics card, the graphics card will not work in the highest performance state. Originally, I thought power management will only work for CPU, but after understanding, I know the graphics card also works.
