When the laptop computer would not energy on, the display screen would not energy on, or the pc boots as much as home windows (hears by the boot sound) however would not present up… These are frequent errors in Laptops, so what to do What occurs when the laptop computer doesn’t activate? Right here maytinhvn wish to share how I can repair it for everybody, anybody can deal with it by themselves.
There are various circumstances when the laptop computer doesn’t present up on the display screen. I’ll cut up up completely different circumstances so that you guys can see which case my system is having and deal with it correctly.
1. In case of full voltage loss.
Once you plug within the laptop computer’s adapter and activate the ability. However there is no such thing as a signal, no energy indicator gentle, energy set off gentle. We have to test the beneath steps:
+ See if the adapter has eaten energy by trying on the energy indicator on the adapter.
+ The adapter gentle is on, then we proceed to test if the voltage on the output for the adapter is sufficient or not. By adjusting the Vol meter to the 50V scale, the black rod is positioned outdoors the crimson rod inside and see how a lot the meter is on the needle. About 12v – 19v relying on how a lot voltage the laptop computer makes use of, could be seen on the charger or behind the physique.
+ Examine if the output voltage jack on the adapter is free, usually unplugging it, inflicting the ability wire to interrupt. To test, we will plug into the DC in jack on the Laptop computer. Plug and push in and on the similar time activate the ability to see if it activates.
+ If the above steps don’t work, then we have to open the machine to test the ability button, DC in jack is free, if nonetheless, consult with the article: Laptop computer cannot energy on.
2. In case the ability indicator gentle is on, the machine lights up in Home windows however doesn’t present up.
Once we activate the ability, see the ability gentle, the onerous drive gentle is on, press the Caps Lock key the sunshine will gentle up and the machine will boot into home windows (pay attention by the home windows startup sound).
+ It’s essential to join a desktop LCD monitor by way of VGA, DVI or HDMI port to see if it exhibits up or not, relying on the kind of machine that makes use of completely different exterior display screen output buttons.
Press Fn and F4 keys on the similar time on Laptop computer HP.
Fn and F5 key on Toshiba’s Laptop computer.
Fn and F7 key on an IBM laptop computer.
+ If the display screen nonetheless doesn’t output, it’s essential to test the VGA chip on the mainboard, there could also be open pins or errors that make the display screen not up.
+ If the desktop display screen is output, it’s essential to test the display screen, the cable connecting the mainboard to the display screen, the high-voltage board, or the high-voltage cable. Normally this case is because of the high-voltage board, to switch the board you’ll be able to consult with the article: Change the multi-function high-voltage board.
3. In case of energy on, the indicator gentle is on, however the image just isn’t displayed.
This case could also be attributable to mainboard error, wanting gadgets, Ram error, BIOS error… You need to test the order in line with the steps beneath.
+ Take away the RAM cowl beneath the physique and test the RAM once more. If the machine makes use of 2 RAM, we take away every stick one after the other, clear the ram slot, RAM pins and plug it again in to see if it really works. If not, strive changing 1 stick of RAM and see if it really works effectively.
+ Take away the DVD drive, onerous drive, PIN, WIFI card and attempt to energy on. If the system boots, one of many above gadgets has been touched, making the system not show. You simply want to connect them one after the other to exclude.
+ The display screen is short-circuited and in addition makes the laptop computer not activate despite the fact that the desktop LCD display screen doesn’t activate. You utterly take away the cable connecting the LCD display screen on the mainboard, then join it to the exterior monitor to see if it comes up, if it does, then the place the error is.
+ Lastly, utterly take away the mainboard from the case, leaving solely the CPU, heatsink, RAM, energy button, plug within the VGA cable to output to the exterior monitor. Then you definitely plug within the energy and take a look at it, if the machine exhibits up, that you must test the built-in display screen once more, test if there’s a mass contact with the shell… And if it would not present up, the mainboard is defective. Potential lack of secondary energy, failure of CPU, Chipset, BIOS…
The above article is steps to test when the laptop computer doesn’t energy on for individuals who wouldn’t have a lot data about {hardware}. And when now we have fastened the acquainted {hardware}, we will use the versatile supply to test to know the place the machine has been booted, which half is defective, which is able to assist shorten the time rather a lot. Thanks
.
