That didn't help at all. Same error message.
The only thing related to Avast the *I* can think about is to skip step #4 of my instructions above.
If you follow those instructions exactly (including the several reboots), then sometimes skipping the "Add/Remove Programs" step can help. Effectively, you would need to clean Avast previous installation using only the removal tool (which is not ideal, but it *is* the best known workaround), always using Windows Safe Mode and administrative permissions.
Now, if a "really really" clean installation of Avast doesn't solve the problem, then you might need to look for other conflicts. This could be related to:
_ other security tools (
past or present; please provide info);
_ drivers (video probably; update);
_ specific hardware settings (mainboard chipset and amount of RAM);
_ hardware problems (where Avast might be triggering the problem, but not necessarily being the problem itself);
_ others.
The above list is sorted starting from the most frequent problem (not necessarily your particular case).
Of course, it could also be a bug in Avast, but for that,
we need someone from Avast Team to participate here in this topic.
To achieve the necessary attention from Avast Team, I would suggest:
1_ go to your first post in this topic;
2_ upper-right corner of the first post, click on "modify";
3_ change the
topic subject to "
6.0.1289 ntdll.dll crash" or similar.
Do you have memory dumps you could upload to Avast's ftp site? Let me know if you need instructions for this.
