Am new to this forum & also new to Windows 7. Previously had Vista briefly, but mainly Mac user for 20 years. I have what I believe to possibly be an error showing up on my new Dell, shows in lower right corner. Took a pic of it, if I am able to attach it. But basically it is a yellow/orange rectangle with a white triangle inside it with an exclamation pt. Also has a white box next to it with what appears to be a pic of the hd. This doesn't go away & can't be moved, in fact it seems to not all be showing, as it goes off the screen. Thanks for any help!