drjohns :
yeah I have tried both extended and dual setups and it is only a problem on the dell. I have also tried a lower refresh rate for this one ( the built in lcd) and the only problem comes from when I wake or boot and it lasts for about 5 min. across the taskbar. Ive tried with or without taskbar or autohide. like I said it only lasts for a bit but I am wondering if I should expect a degradation. running a separate monitor independently gives no problems either. thanks for the help and let me know if you come up with something!
Just realized this is a laptop, are you using the laptop screen and a second monitor or dual external monitors?
You said the issue is on the dell, do you mean on the dell laptop screen? Your first post is not very clear about exactly where is happening where and how the system is setup. I just guessed about the setup because you said "your other monitor" leaving us to guess what that can be. Need some details about what screen you are talking about. Did you try checking for newer BIOS and video driver from Dell for your laptop?
This model also has a docking station, are you using that?