If merely blank,it would seem the video card to computer and display is in order.
Have you looked to see if there is a problem in Device Manager? Just possible the latest drivers are loaded badly and the result doesn't "make sense" to the hardware.
The resolution is probably meant to be set high, but even if not, there should be something on the screen.
Finally and forgive the question, but is there a power-on light and does it show green or amber?