Atlantian

The problem occurred on both 144Hz and 60Hz. Closing all of my browser windows and tabs seems to have fixed the problem. Thank you for the suggestion!

I guess so. I just closed all my browser tabs/windows, then tried playing a video again and it seems to work fine. Not sure what was going on, but thanks so much for the support! Sorry for wasting both of your guys' time with such a silly issue. :P

Yes. I don't see the white lines anymore after minimizing my browser if that's what you're asking.

Yep. I just played a few different formats (MP4, AVI, and WMV). Didn't see any of these flickering white lines in Windows Media Player.

I've been using my new PC build for a couple of days now without any issues. I was having GPU issues a few days ago, but those have been since been resolved and up until now I've had no issues. Now, all of a sudden, I'm having issues with white lines flickering on my monitor. These lines only seem to appear and flicker when I'm viewing a video (on Twitch or YouTube for example). They also only appear inside the video window itself. An example of what I'm talking about can be seen here: The last thing I was doing before this issue occurred was re-downloading and adding album art to my iTunes library. I also installed f.lux about an hour before the issue occurred. I disabled f.lux to see if the problem went away, but it didn't. I'm not sure if uninstalling f.lux and restarting would help or not. Other than that, I haven't done anything that I can think of that would have caused an issue like this to occur. Also, white lines appear on other web pages, not just pages that contain Flash/video content. These lines do not flicker, they just appear on web pages and remain stationary. An example of this issue can be seen here: Other details: The monitor I'm using is connected via DVI. I also have an cheap, simple Dell VGA monitor connected for multitasking. This issue occurs on the VGA monitor as well. The VGA monitor is connected to the motherboard and the DVI monitor is connected to the video card. I haven't played any games on my PC yet, so I'm not sure if this issue occurs in-game. I had the refresh rate set to 144Hz, and decreased it to 60Hz when the problem started occurring; this did not help. My PC specs are listed below: Monitor: Asus VG248QE 144Hz 24.0" Monitor GPU: Sapphire Radeon HD 7970 3GB Video Card CPU: Intel Core i5-4670K 3.4GHz Processor (currently not overclocked) CPU Cooler: Corsair H100i Motherboard: Gigabyte GA-Z87X-UD3H ATX LGA1150 Motherboard Memory: 2x4GB Patriot Viper 3 DDR3-1600 SSD: SanDisk Extreme 120GB 2.5" SSD HDD: WD Caviar Blue 1TB 3.5" 7200RPM HDD OS: Windows 8 (64-bit) PSU: Cooler Master Silent Pro M 700W 80 PLUS Bronze Case: NZXT Phantom 410

Awesome, thanks again for the support!

Connecting with DVI fixed the black border. Thank you all very much for the replies! Now I'm curious...I'm just using the monitor's built in speakers for my audio. Would there be a noticeable difference between the HDMI audio as opposed to the 3.5mm audio?

Hi there. I recently fixed a BSOD issue with my new PC build that was being caused by atikmdag.sys. I fixed this by doing a completely clean install of Windows 8 and removing all installed files. I then installed my AMD drivers without Catalyst Control Center, and things have been working great since then. However, my monitor is connected via HDMI to my GPU, and there is about a 1-inch border all the way around the monitor. I fixed this before by installing Catalyst Control Center and adjusting the overscan/underscan in the settings, but I'd rather not have my PC keep crashing on me anymore. Does anyone have a solution to this issue that doesn't require CCC? PC Specs: CPU: Intel Core i5-4670K 3.4GHz (not currently overclocked) CPU Cooler: Corsair H100i Motherboard: Gigabyte Z87X-UD3H LGA1150 GPU: Sapphire Radeon HD 7970 3GB OC (not overclocked) Memory: 2x4GB Patriot Viper 3 DDR3 1600 Case: NZXT Phantom 410 Monitor: Asus VG248QE 144Hz 24.0" Monitor PSU: Cooler Master Silent Pro M 700W 80 PLUS Bronze Storage: SanDisk Extreme 120GB 2.5" SSD (Boot drive) Storage: WD Caviar Blue 1TB 3.5" 7200RPM HDD OS: Windows 8 (64-bit) OEM Will post all system specs if needed. Thanks for any tips!