I'm running Win 7 on a new HP laptop. Immediately on powering it up, I uninstalled the preconfigured Norton Antivirus and installed Avast! free version. No troubles.
A few days ago, I upgraded to the full paid Avast! 5. I uninstalled the free version completely and reinstalled from scratch. Since then, the computer responds to sleep mode by either freezing (black screen) or shutting down abruptly. Upon restarting, I get the "windows was not shut down properly" message. After completing a normal boot, windows offers to search for a solution to the problem, but returns no results. Thanks, Bill.
In order to isolate the problem as relating to the sleep function, I changed the power settings to "never" for sleep mode while the unit is plugged in. I now have no problem with the unit plugged in. When running unplugged on the old settings, the computer continues to shut down when sleep mode attempts to activate.
I saw one other post on this forum about this problem, but no explanation or solution was offered. Any ideas? I like Avast! much better than the Trendmicro I've run on other computers, but this is annoying.
Jim