How do I fix this problem in my computer?

My computer’s screen suddenly turned black. After a few seconds, it showed the Blue Screen of Death saying that a driver called disp.dll caused an infinite loop. After I rebooted it, there is a dialog box saying that my computer has recovered from a serious error. After that, it began functioning normally again. However, I am encountering interruptions wherein the screen will black out for a few seconds and then return to normal again. Until now it hasn’t stopped. What could be the cause of this and how will I fix it?