Hi, I am having a very annoying problem after I installed windows 7. When I open applications or switch around windows / tabs I get these strange horizontal line fragments across the top of the screen.. It's like I was receiving static interference. Which is strange since I am not using a CRT monitor. I have looked for help everywhere. I use a 21.5 inch LG LCD Monitor. Resolution is 1920 x 1080. My graphics card is a ATI radeon 4670 HD. Running Windows 7 ultimate x64. I have installed all of the latest drivers. I used to have Windows Vista ultimate (64-bit) installed and had no problems with the display. This strange graphic anomaly only began after I installed windows 7. I would post a screen shot but the occurrence of this glitch is erratic and very quick so it is hard to anticipate it. I would really appreciate some help on this. Thank you.