sometime if you take a soft damp cloth and rub it in a circle very gentle it might go away. I got a dimmension 3000 with a 17 inch flat screen an it had one on the lower right. I did this and it went away. had it now for about 7 months.
I am sure you have all setup on the same workgroup name. and go to wireless network connection then properties, click on preferred network when it turns blue click properties then authentication and make sure enable IEE is not checked.
i did the bios update with no problem, but i would download and reinstall the video drivers first and try to fix this first. then if you want you can download the bios and install that.
when I changed my cpu in my I8200 I left the pad on and used artic silver 5. I went to their site on how to apply it. you need to clean off the old stuff with actone and a lint free cloth. dell is funny about stuff like that. if you...