I developed a problem on two computers on the same network where the monitor would go dark while working on the computer as if the computer had been idle and the power settings turned off the monitor. Opening a window or navigating in Internet Explorer (IE) would trigger the problem, and hitting the space bar on the keyboard would restore the screen. When the problem was present, it would sometimes occur every time I tried to navigate in IE, and sometimes only intermittently. Deleting and re-installing the video drivers on the computers fixed the problem at least temporarily. On the desktop computer the problem recurred a little over a week later, but the problem has not yet recurred on the laptop. Deleting and re-installing the video driver on the desktop a second time seems to have again stopped the problem for now. Two other laptop computers on the network seem unaffected.
McAfee antivirus has found no problems, rkill found no processes to stop, and Malwarebytes Antimalware found no issues.
Suggestions as to cause and for a permanent cure?
Desktop: HP Pavillion p6620f w/ ATI Radeon HD 4200 integrated graphics running Windows 7 Home Premium 64-bit Ver 6.1
Laptop: Lenovo G580 w/ Intel HD Graphics 4000 integrated graphics running Windows 8 Ver 6.2
Both with the latest video drivers from the manufacturers.
I hope that this is the appropriate forum.
Thanks for your help.
Edited by BamaTex, 24 May 2013 - 12:51 PM.