Blue screen crashes, error says something about video

My first guess is that you received a video driver update from Windows Update and it isn't working. If you can get the first couple off lines of the Blue screen code you can narrow it down. Here are a few things to try. First off, turn on (boot) your PC and tap the F8 key the whole time as it boots up. You should go into a black screen that asks you how you want to start windows. This is called starting windows in safe mode.(It uses basic drivers to bypass the issues you are having so you can get in and roll them back.) If you can get into windows now then you know its a driver problem. You will need to go into your device manager and locate your video card drivers in the properties of the device. There will be an option to roll them back. I would try this first and see if it works. You could also try a system restore instead if you have that on, this will allow you to revert you system to a period before the issue began.