Dual video problems (some for Premiere Pro, but the idea is the same)
-link to why http://forums.adobe.com/message/4685328
-HP Fingerprint/Password conflict http://forums.adobe.com/thread/911575
Did you also delete the BadDriver.txt file, as I suggested?
Although going after the video card(s) and asssociated drivers seems to be indicated by your error message, what makes me stop and wonder about the situation is the fact that you wrote
I worked on a project yesterday for several hours. Today the program will not open.
So, I would ask
a. What happens if you open a new project? Will this new project open and does this same error message appear immediately or later into the new project?
b. In the project that you wrote about initially what are the properties of the source media that you put on that Timeline? Did you progressively add videos with different formats as you moved through the project in those several hours? Any special effects added to that Timeline? How much Timeline rendering have you done and any problems with that? After several hours of work, what was the duration of your Timeline?
Please let us know the outcome, including whether or not disabling the Intel card had any impact on the situation that you presented.
Add On...I did not see SG's post until after I had posted mine. From what you wrote it appeared that you have deleted the BadDrivers.txt file and that did not affect the situation. Please confirm as requested.