ok first things first, relax, take a breath, nice hot coffee
now, a screenshot is a must when reporting errors such as this as it greatly helps the team to respond if you dont know how, check the code snippet below:
-- Open guru and when its open and is displaying this error, press PRT SCR on your keyboard,
-- Now open paint program and press CTR + V to paste the image
-- save the image and upload it here along with a description of the fault
Now as well as making the error post it helps alot to list your machine specs, it can be in the post or part of your signiture if you like that way it's always there, you should include:
Processor
Graphics card
RAM capcity
Windows Version
Hardrive , SSD or no
other things that may be unique to you're issue could also be screen resolution, or are you dual screening.
If you do all this I am certain the Dev's and Mods would thankyou and be alot quicker in assisting to solve this issue for you
PC Specs: Windows 7 home 64-bit, Amd 7900 3gb DDR5 graphics, 8gb DDR3 Ram, Intel i7 3.4ghz