[HELP] Acer 4820TG is ON, but screen is OFF

[malaysian_newbie]

Hi. I have a 2011 Acer 4820TG. It is a dual-graphic notebook, with AMD and Intel VGA card. When I push the power button, it runs, I can hear the fan, but the problem is screen is OFF.

I tried unplug the power cord and press the power button for 1 minute. Did not work.

However, last night, I switched it on and press random F-something key on my USB keyboard, it worked, then today it doesn't work again!

I don't think screen or RAM is the problem, because if it is, how could it temporarily worked?

I tried to enter BIOS, unfortunately, the built-in keyboard is already malfuntioned long before this problem occured. I tried using USB keyboard, but now the keyboard doesn't blink any light, so I assume whatever input I key-in will not reach the computer.

I want to avoid going to repair shop at all cost because they will overcharge me and replace something unnecessary and make me pay for it.

Any help would be appreciated.

 

[webworkings]

Try this...

1. Turn the laptop off (not sleep or hibernate but off).
2. Connect an external monitor to the laptop.
3. Turn on the external monitor.
4. Turn on the laptop.

NOTE: You may have to press an "external monitor" button. Could be the f4 button or a button with two monitors on it, for the external monitor to work.

If you can see fine on the external monitor, then your attached display, or the ribbon cable that connects it, are your problem.

If you can't see on the external monitor at all, or the problem occurs on the external monitor as well, then it is probably the graphics card/GPU that is the problem, which may require the motherboard be replaced.

 

[malaysian_newbie]

@webworkings

Doesn't work either. I can't get to press F4 because the USB keyboard doesn't even blink a light, so it's not giving any input to the computer.

Now, I noticed the HDD indicator light doesn't blink. Does that means HDD isn't spinning?

I had this same problem 2 months ago. But I can't remember what made it works again. Yesterday, the problem come again. Last night, it worked once but doesn't work again today.

 

[webworkings]

If there are no sounds coming from inside it, then it isn't just the display.