I ran Avast Free for 5 years without any problems. After a brief stint using Kaskpersky, I recently installed Avast Pro. I ran the Kaspersky removal tool prior to installing Avast again. I have been having problems with Avast Pro causing my WinXP machine to hang at the black Windows splash screen with the scrolling blue bar whenever I reboot. If I boot into Safe Mode and remove Avast, the machine restarts without issue. I have also been using the Avast removal tool and restarting again prior to reinstalling Avast. This has happened numerous times recently. I have gone back to Avast Free for the time being and everything seems to be fine.
My computer is rarely restarted or turned off unless required by an error or update. I read another post where a guy was having a similar issue and he attributed it to a conflict with his secondary ATI video card. I only have one video card and am running Omega drivers for it.
Does anyone have any ideas? Thanks in advance.