Question Asus Vivobook A412DA won't turn on but the power LED is on

May 31, 2020
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Hello, recently I’ve been having issues turning on my laptop (I put the system info below). In addition, sometimes when l leave it idle for while (after it’s turned on successfully), the screen turns black (but is still lit on) and doesn’t response when I pressed anything except the power button to force shut down.

When I select Restart, the system will shut down but does not boot up again automatically so I have to press the power button. It happened a few times over a couple of months but now, it doesn’t work with one try.

Now when I press the power button, I can see the power LED turned on, hear the sounds from the base as if the machines are working but the screen doesn’t light up. I’ve waited for 3-4 hours, it stays the same. What I do now is keeping the laptop always on.

I read some suggestions online and have tried the followings:
  1. Uncheck the “Fast startup'“ in Power Options settings.
  2. In the power plan settings, I’ve done “Restore default settings for this plan”
  3. Unplug the power cord, force shut down the laptop by pressing the power button for a few seconds, then press it again and hold.
The laptop turns on only after 10+ times repeating the process in step 3) above.

Hope someone can advise me on what’s gone wrong with the laptop and what to do to fix it.

Going to a repair center would be the last resort, though this laptop is still in warranty period.
Thanks!

My laptop system information:
OS Name Microsoft Windows 10 Home Single Language
Version 10.0.19041 Build 19041
OS Manufacturer Microsoft Corporation
System Manufacturer ASUSTeK COMPUTER INC.
System Model VivoBook_ASUSLaptop X412DA_A412DA
System Type x64-based PC
System SKU
Processor AMD Ryzen 3 3200U with Radeon Vega Mobile Gfx, 2600 Mhz, 2 Core(s), 4 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. X412DA.306, 16/07/2019
SMBIOS Version 3.2
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer ASUSTeK COMPUTER INC.
BaseBoard Product X412DA
BaseBoard Version 1.0
Secure Boot State On
Installed Physical Memory (RAM) 4.00 GB
 
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