Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Strange constant flicker on LCD Monitor - help?!

22 Dec 2011   #1
DeniqueCoelum

Windows 7 Professional x64 SP 1
 
 
Strange constant flicker on LCD Monitor - help?!

I've been having this problem for a while now, and I really want to get to the bottom of it.

The flicker takes the form of narrow vertical shadows moving across the screen horizontally. It isn't particularly noticeable on lighter backgrounds, but on a darker screen, it's really distracting. I notice it most when play Minecraft (in dark areas) and at darker scenes during DVD playback.

I thought it might be that the monitor isn't getting enough power - there's my PC, an external HDD, surround sound speaker system and two lamps running off the same power supply - but I plugged it into a different supply, and still had the same problem.

One thing which might be causing it: the cable the monitor was supplied with is a European two-pin, rather than a UK three-pin, and I'm having to use an adaptor.

Any advice would be much appreciated!


My System SpecsSystem Spec
.
22 Dec 2011   #2
mgp1964

Windows 7 Pro x64
 
 

If you are up to it, I would take apart the LCD and check the capacitors, you may just find a leaking or bulging capacitor which can be easily replaced, if you are into soldering.
My System SpecsSystem Spec
23 Dec 2011   #3
DeniqueCoelum

Windows 7 Professional x64 SP 1
 
 

I'm afraid I'm not much of a soldering hand! Do you think that's what it's likely to be? I'm sure the monitor is still under warranty, it's less than a year old.
My System SpecsSystem Spec
.

23 Dec 2011   #4
Qdos

 

I'd be tempted to first check the refresh rate and resolution are set properly, in case it's not a hardware fault.

Might be helpful if we knew what screen it is since your spec's list two models...
My System SpecsSystem Spec
23 Dec 2011   #5
bassfisher6522

Windows 7 Ultimate 64 bit
 
 

I think Qdos has got the right idea there. To add to that, check the hardware accelerator in adobe. I just went through something similar and had to disable the hardware accelerator in adobe while watching youtube video but that was after I upgraded my GPU, that's when I started seeing the screen flicker. Worth checking.
My System SpecsSystem Spec
23 Dec 2011   #6
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

You might give the video cables the 'wiggle test'. With everythign on wiggle the ends on the monitor and the PC to see if you have any reaction. If so wherever you get a reaction would be the culprit. i.e. monitor or GFX adapter.
If that checks out, try another monitor if possible or that one on a different PC.
The monitor may just be bad.
My System SpecsSystem Spec
31 Dec 2011   #7
DeniqueCoelum

Windows 7 Professional x64 SP 1
 
 

Quote   Quote: Originally Posted by Qdos View Post
I'd be tempted to first check the refresh rate and resolution are set properly, in case it's not a hardware fault.

Might be helpful if we knew what screen it is since your spec's list two models...
Okay! Checked refresh rate and resolution, that's okay. I've updated my spec so that it lists the model I'm talking about, the 23".

Quote   Quote: Originally Posted by bassfisher6522 View Post
I think Qdos has got the right idea there. To add to that, check the hardware accelerator in adobe. I just went through something similar and had to disable the hardware accelerator in adobe while watching youtube video but that was after I upgraded my GPU, that's when I started seeing the screen flicker. Worth checking.
Hardware accelerator... now, I'm afraid you're going to have to give me some pointers on that one, I'm not sure how to check that?

Quote   Quote: Originally Posted by Britton30 View Post
You might give the video cables the 'wiggle test'. With everythign on wiggle the ends on the monitor and the PC to see if you have any reaction. If so wherever you get a reaction would be the culprit. i.e. monitor or GFX adapter.
If that checks out, try another monitor if possible or that one on a different PC.
The monitor may just be bad.
I've done the old wiggle test, nothing showing up there. It's not flickering at the moment, as far as I can see, and wiggling doesn't change anything. I'll try and get it hooked up to my parent's PC at some point and see what happens there.
My System SpecsSystem Spec
01 Jan 2012   #8
A Guy

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x64 SP1
 
 

Do you see the issue on the monitors own internal On Screen Displays (OSD)? The menu for instance. If the monitors own menu displays correctly, then it is a video problem (source). It is unlikely to be bad caps, especially on a one year old monitor. The major cap problem was limited to an older production run (see Capacitor Plague).

In a television, a steady rate horizontal or vertical scrolling would point to a bad ground or video interference due to shielding issues. If you can connect the monitor to another PC, you can quickly determine if it is the monitor or the PC. I believe a horizontal scrolling would be less likely with a monitor failure.

A Guy
My System SpecsSystem Spec
01 Jan 2012   #9
bassfisher6522

Windows 7 Ultimate 64 bit
 
 

My System SpecsSystem Spec
01 Jan 2012   #10
Heyyou

WIN7 x64 Home Premium SP1
 
 

Just a guess, but when you mentioned playing games, I immediately thought of the video card not being large enough.
My System SpecsSystem Spec
Reply

 Strange constant flicker on LCD Monitor - help?!




Thread Tools




Similar help and support threads
Thread Forum
screen constant flicker when playing games
Hi guy I need some help .... 2 days ago my games started flickering constantly in full screen mode only way to stop it is by playing in windows mode . But games don't look as good. I have an alienware m18x R2 2yrs old I 2.8ghz processer 2x GTX 680M graphic cards 16gig of ram. And windows 7...
Performance & Maintenance
Intermittent screen flicker when laptop connects to external monitor
I have a Dell Latitude E6410 running Win 7 Professional (64-bit). I have it connected to an external monitor. Whether I choose "projector" or the option to show on both screens, the monitor on the laptop will flicker. Here's more specific information that may be helpful: The laptop and a...
General Discussion
Monitor flicker + black screen on startup
Hey guys, just got a problem recently with my LCD monitor. It's a fairly old one (Acer 17"inch) and I'm suspecting that it's simply dying on me. The problem is that whenever I power on my monitor, the screen flickers on for a second and then immediately off. Probably something with the...
Hardware & Devices
Constant horizontal stripe along bottom of monitor picture
I don't know if this is hardware or software related, so I kept it in this topic. There is a constant horizontal stripe that takes up the second and third row of pixels from the bottom of my monitor. The color varies, but it seems to be some sort of an average color of the column above it. For...
General Discussion
Strange Startup - Monitor
The Compaq laptop with windows 7 starts up with a black screen, as soon as I start it up it will start the cooling fan but the screen does nothing but just a black screen. Before this happend, I was playing minecraft and then left it and when I came back the computer had automaticly locked, I tried...
General Discussion
Vizio 19" VA19L Monitor Screen Flicker During Video Games
Hi everyone, So I just got this brand new 19" BEAUTIFUL Vizio 19" HDTV Monitor from my Brother. He's a Coastie and can't bring it with him to A School, so he gave it to me as a VERY early Birthday and Christmas Present. I was, of course, VERY appreciative LOL. Anyway, the Monitor works great...
Media Center


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 09:53.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App