Hi Kemical,
Thanks for your response. I was unable to replicate your screen shot, but it gave me an inkling of what to do. Using control panel, I was able to click Power Options and change Advanced Power Settings to Balanced but I was unable to Enable adaptive brightness. Windows help advised me "Adaptive brightness is not available in all editions of Windows 7"
I increased by the latent times on display and sleep, but having done that, when I depressed a keyboard key, the same problem occured.
Thanks for trying to help me.
Montgomery