I have a 23-inch ASUS VH238H 23" Full HD HDMI LED Backlight LCD Monitor, attached to a Lenovo W520 Core i7 Thinkpad laptop. Up until about 4 days ago, they ran together just fine. When I started the monitor and laptop to work on my client's project, the monitor screen started pixilating--there were tiny dots moving across the monitor screen; text was jumping, wiggling, changing shape; and photos danced, also with a pixilating effect.
Thinking I might have a virus, I ran all of the clean-up scans using Norton 360. Nothing was found.
At the time, I was using HDMI, so I switched to another HDMI cable and the pixilating continued. I then disconnected the HDMI cable, installed a VGA cable, and reset the monitor to VGA. The problems continued. Initially the problem appeared only when connected to the Internet. Now it seems to be spreading to other types of documents, to where the text is breaking up or fading.
The problem does NOT occur when using the laptop screen; only when the large monitor is connected and only on the large monitor screen.
Fortunately, we have 4 of the same model ASUS monitors, so I disconnected my monitor and hooked up one that was new in the box. Again I tried HDMI and set the second monitor to the correct settings, but the problem was just as bad as with my monitor.
I called Lenovo today and Tech Support updated my drivers and said they couldn't troubleshoot the ASUS because it isn't Lenovo hardware. I think it's the laptop rather than the monitor(s), because I had the same pixilating with both ASUS units. Updating the drivers did nothing to improve things.
I'm calling ASUS Tech Support next, but I'm looking for some unbiased ideas from the Bleeping community. It looks like if it's the laptop I'm going to have a hard sell with Lenovo. Has anyone else had this problem on a monitor?
Edited by irishmoll, 06 March 2012 - 05:44 PM.