F5F Stay Refreshed Hardware Notebooks My laptop screen turned off and I don't know why?

My laptop screen turned off and I don't know why?

My laptop screen turned off and I don't know why?

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Silvinha10
Senior Member
694
07-14-2026, 10:06 AM
#1
Hi guys, I'm new here and really need some help. I was using my laptop normally (it's a Samsung np-sa31 with a Bremen - M motherboard), but after turning it off by pressing the power button and closing the lid while I was in a rush, when I turned it back on, the screen wouldn't turn on at all! It just stayed black.

I tried everything. I messed around with the BIOS, reconnected the LCD cable, moved the RAM sticks around, and tried running it with only one stick connected. I took out the CMOS battery and put it back, tried clearing static via the power button, and even bought a whole new screen! The problem is still there.

The laptop works perfectly fine when plugged in to an external monitor using a VGA cable. You can see everything on the screen if you shine a flashlight on it (it worked just as well with the original LCD and the brand-new one I bought).

I don't know what's wrong at all. I took the laptop apart fully, but there were no burnt fuses in the photo because I removed the heat sink for the picture. Maybe you guys can help me find something or tell me where to look? I'm just missing something obvious here.
S
Silvinha10
07-14-2026, 10:06 AM #1

Hi guys, I'm new here and really need some help. I was using my laptop normally (it's a Samsung np-sa31 with a Bremen - M motherboard), but after turning it off by pressing the power button and closing the lid while I was in a rush, when I turned it back on, the screen wouldn't turn on at all! It just stayed black.

I tried everything. I messed around with the BIOS, reconnected the LCD cable, moved the RAM sticks around, and tried running it with only one stick connected. I took out the CMOS battery and put it back, tried clearing static via the power button, and even bought a whole new screen! The problem is still there.

The laptop works perfectly fine when plugged in to an external monitor using a VGA cable. You can see everything on the screen if you shine a flashlight on it (it worked just as well with the original LCD and the brand-new one I bought).

I don't know what's wrong at all. I took the laptop apart fully, but there were no burnt fuses in the photo because I removed the heat sink for the picture. Maybe you guys can help me find something or tell me where to look? I'm just missing something obvious here.

P
PolluxLp
Junior Member
31
07-15-2026, 03:25 AM
#2
The inverter board could be broken, so it isn't giving enough power to the lights for the lamps or the LEDs on the screen.
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PolluxLp
07-15-2026, 03:25 AM #2

The inverter board could be broken, so it isn't giving enough power to the lights for the lamps or the LEDs on the screen.

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GumpyGamer
Junior Member
37
07-15-2026, 03:58 PM
#3
Hey, could you point out exactly where the inverter board is sitting on my motherboard pictures? Thanks a lot!
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GumpyGamer
07-15-2026, 03:58 PM #3

Hey, could you point out exactly where the inverter board is sitting on my motherboard pictures? Thanks a lot!