I have vista ultimate x64 service pack 2 + automatic updates, office 2007. The same software and hardware configuration is on 4 computers. All 4 have the same problem after a while since fresh installation.
After starting, and login sometimes I can't use office, adobe reader, side bar.
When I try to open:
- adobe reader, the process is running but no window.
- outlook (startup, or later) the window appears but when I click on it, it's status changes to Not Responding, and it freezes.
- word, the startup logo appears in the center of the screen but the window doesn't.
- excel, seems to work but when I use software that uses excel I get automation error in that software.
- any other program works like: total commander, my own software (.NET), sandboxie, yahoo messenger, opera, firefox.
- vmware, no problem, but when I try to start a virtual machine vmware freezes too.
- sidebar is frozen too, it doesn't redraw.
This problem has a random behavior after restart things go to normal. After 3-5 restarts the problem reappears. Or even after using the computer for 6-7 hours.
I can see each process with task manager but they are not listed in applications. If I kill them and reopen there's no change.
Adobe Reader gave me DDE server error along time ago, I'm not sure if it's related.
The problem appears after a week, maybe two after a fresh installation of windows, and some automatic updates.
I used to have Avira Personal Antivirus + Windows defender. I recently uninstalled Avira hoping it will solve the problem, and it did in a way, now it happens less often.
I still use windows defender. UAC is enabled.
I've checked for viruses with 4 antivirus: bitdefender, panda, avg, kaspersky but haven't found any virus.
I have some good knowledge of software programming, computer hardware and software. So I don't have any useless toolbars, spyware, applications installed or running.
The problem is very annoying and the fact that it happens on 5 different computers with 5 different users and the same trustworthy software leads me to one conclusion that it's a vista problem.
Thank you for your time, and I hope that one could give me an advice at least where to start looking for the source of the problem.