Half the screen on my laptop is displaying incorrectly (random colors)

Question

My netbook was dropped and now half the screen is displaying incorrectly. Its basically a rainbow spectrum of random colors.

On the other side everything is working just fine. It doesn't appear that the screen is damaged though because all the pixels are displaying colors.

Does this sound like something that can be easily fixed or should I just toss it out?

Update: I followed CharlieRB's advice, the picture is fine when connecting the netbook to my TV. So I took the laptop screen apart, disconnected and reconnected the cable. It didn't change anything. The right 2 thirds of the screen are still funky (its actually 2 thirds not a half). One very strange thing I did noticed is that sometimes when disconnecting from the TV when the laptop screen refreshes the 2 outer thirds start to work perfectly and the inner third becomes solid black. It stays this way until I reboot and then it goes back to the original problem.

Solution 1

What I would do is diagnose the problem a little more by connecting an external monitor to see if it displays correctly. If so, the LCD is damaged or a connection has come loose. If the image on the external display also has lines as you described, the video adapter is possibly unseated (if not part of the MB) or damaged.

In either case, it will likely need you (or a qualified tech) to disassemble the laptop and find the issue. Hopefully it is a loose connection or card. Otherwise, depending on how much you paid for it and how old it is compared to what it will cost to fix it will answer whether you should "just toss it".

Solution 2

Many times, on laptons with LED screens, the ribbon cable can go bad. Maybe try putting some pressure (not a lot) on the lower part of the screen bezel, where the display cable runs behind and it may work. I had that issue with my dell laptop. The screen itself was fine, i just needed a new cable and bam.

Comments

[Daniel R Hicks]

It may be that the display itself is broken, it may be simply a bad internal connection that can be corrected, it may be that the motherboard has been toasted. No good way to tell which, but most likely the display proper will need replacement. (Note that replacement screens for many laptops are available at halfway reasonable prices.)

[Daniel R Hicks]

(If the "bad" side is displaying data more or less correctly, just with very odd colors and maybe a little blurry, then it's likely that one of the internal layers has broken loose and the display proper is damaged beyond repair.)

[user3746803]

@DanH thanks for the info, the bad side is not displaying any sort of legible data. It looks like one of those system tests with the vertical striped colors (only in this case each color is only 1 pixel wide).

[Daniel R Hicks]

Well, the first thing to try would be disassembly/reassembly, on the off chance that it's simply a loose connector or some such. Maybe a 30% chance of success with that.

[Diskilla]

You now could check the inverter. It´s a small chip connected to the display... But I assume, this is a broken display itself... sounds like 3 parts which partially work

[surfasb]

Sounds like a loose plug to me.

[CharlieRB]

You said you took the screen apart. Did you take the case apart too? It takes a lot more work, but the cables which connect the monitor run down through there to the graphics adapter. There may be a loose connection there. Just be very careful with the ribbon cables not to pull or twist too hard.

[harley_woop]

@fixer1234 Good hardware stores often have a Bam, it's properly spelt Bamm, from the german ;)