Bottom of LCD Started Flickering

[THRobinson]

The past week the bottom 10-15% of my screen started to flicker on occasion. Been running Win7 since it came out, Monitor is probably 8yrs old (Samsung 2232BW), video card I got early this year so under a year old. Checked and made sure everything is connected properly.

I have my TV plugged into the same card and when both running not seeing the flicker so thinking the screen itself... when a screen starts to go, is that a common symptom? or should I check something else?

EDIT: Video of issue
https://www.youtube.com/watch?v=HK9lvObfmbQ&feature=youtu.be

 

[THRobinson]

Been playing around with settings... noticed that the more detail a background image has the more it flickers, and depending where the details are, affects where it flickers so not just the bottom 15%.

Been turning on/off aero which doesn't seem to make much difference, it's mostly the background image itself that does.

Running stress tests with various programs I found online... some good some bad... but none giving any errors.

Will grab the 19" Dell tomorrow and give it a test. Will need to find another DVI cable though to test that with... can't recall if the other computer here is DVI or using VGA still.

I also updated the video card drivers today.

If still flickers on the other screen and with another cable... I guess it's narrowed down to video card or software. At which point I format the C:\ and reinstall everything I guess. If still an issue... I guess video card despite the lack of error messages from stress tests?

 

[unknownofprob]

Try integrated graphics if you have it.

 

[THRobinson]

Good suggestion.

Right now, I took the LCD off the family computer and switched. Problem is, their LCD on my system is fine, my LCD on their system is fine.

Ordered a couple new DVI cables, found them on sale cheap. Their system is still using VGA so may be it's a DVI port or digital issue, regardless, they need a better cable. Other downside is mine is 1680x1050 and theirs is 1440x900, so, maybe it's a video card issue still just that at a lower resolution the card isn't working quite as hard so not failing.

Gotta hate the cases that are less than straight forward. Admittedly, if there is an issue I am hoping monitor... I'm due for a better one, like the DELL Ultrasharp U2414H.

 

[THRobinson]

Well... put my back out so, monitor testing got delayed a bit... finally crawled under the desk today and remembered oh ya, my last motherboard had integrated graphics, this one doesn't. No cards to test with either.

So...

- My monitor on another computer, flickered but not in the same way, was like a big bar on the other system vs the image looking like it shifted.

- The other monitor on here, no issues... different size/resolution though.

- New cables, no difference.

- Monitor is totally fine until I put something with a lot of detail... smooth gradient of colour doesn't do anything but an image like the Win7 wallpaper of mountains and grass the grass area goes nuts. I tried with a photo of my motorcycle, large 10mp image, and grass area went nuts as well. So not sure if just all the lines/contrast, or maybe in the RGB, the G (green) is messed up since seems to be the colour of the areas that go crazy. But if I bring up a green only pattern, it doesn't always happen. BUT... if I go to Google, do an image search on green patterns, the thumbnail screen with all the images goes haywire.

- I have the PC screen plugged in with DVI and my 40" Sony plugged into the same card through HDMI... both running same time, same wallpaper, only the PC screen seems affected.

- Formatted my C:\ and having just Win7x64 and the most current copy of my video card software (newer than what I had before I formatted) I could see the screen issues occur.

- Ran numerous burn-in tests with 0 errors.

So... ya, pretty certain it's the monitor. Right now, on this screen where it's primarily white, I am having 0 issues.

I would like to test another video card, just in case since my car is under warranty still, but no access to any. Other computers here are all integrated because not used for much other than facebook and homework. Can anyone think of anything else I can test? Just hate to order a new monitor, have it arrive and same issue... living middle-of-nowhere means mainly shipping everything so, shipping it here and back if the monitor isn't what's the issue would be as much as the monitor is worth. 😀

 

[THRobinson]

Did a bit more...

Borrowed a similar video card, GTX640 I think it was, and plugged it in, had the same issues.

Also noticed, if I leave the computer running all night but turn the monitor off, when I turn the monitor on in the morning for the first 10-15min I have no issues at all. After the screen warms up I guess, then it starts flickering.

Looking at the DELL U2414H, even though 8ms response, the screen has great reviews and colour calibrated in the factory. I was also looking at the Asus VG248QE but thinking all that speed and faster refresh, not sure I'd see a difference since I don't have a computer powerful enough to run a modern game full detail/full speed anyways.