Hi, I have a very annoying problem.
Yesterday (and many times before) I plugged my PC to my TV screen via a VGA cable connected to a DVI to VGA adapter.
Everything worked fine, and I kept my PC plugged to the TV screen for quite a while.
Today, I shut my PC down with a bit of carelessness. I plugged it to my TV Screen and it gave me the blue screen of death.
I did the normal procedure, entered in safe mode and restored to an earlier point, and that solved the blue screen.
But then the display was in a deep blue tone, something that wasn't there yesterday.
The settings of the screen didn't change, as well as the graphics card settings.
Note that when I connected to PC back to my normal screen, it was normal.
It sounds like you are missing the red or green analog signal to your display and the blue is showing as dominate. Check your VGA connectors / adapters for bent pins or a poor connection. If that is fine check the monitor and video card.