Hi I’m using Avast 4.8 pro on XP Vista & Win7. Avast works great on both XP and Win7, but everytime I try to start Avast! Antivirus in vista, the splash screen keeps crashing… When it crashes, a windows (problem reporting center) screen pops up saying that avast splash screen has crashed and if I want to close app or close app and search for a solution… If I dnt press anything and just wait till avast loads & then if I press close, avast will stay open and work but if I press close while its loading, then avast will just close. I have tried updates from MS that are supposed to help with certain apps crashing, and it hasn’t helped… Has anyone come across this problem before, that can maybe give a little insight on whats going on or maybe how I can resolve?
I’m using an Acer Extensa 5220
Intel Celeron processor 540 (1.86 GHz, 533 MHz FSB, 1MB L2 cache)
1.5GB DDR2 ram,
Win Vista SP1
thanks 
It’s a possibility that you had a previous version of some type of A/V that was NOT avast and it’s giving you an issue. Can you please tell us if you have had anything else installed before you put avast on that machine?
My notebook came pre-installed with norton, but I still had to register then activate. As soon as i started windows, I went to programs & features, then removed norton and live updates, after that I installed Avast and went from there…
Download and use the norton removal tool:
http://service1.symantec.com/Support/tsgeninfo.nsf/docid/2005033108162039
After this un- and reinstall avast or try a repair of the avast installation (via the control panel - add/remove programs)
Hopefully this helps - please post back the results
yours
onlysomeone
Thanks onlysomeone. As he stated, the removal tool should help greatly.
As usual, Norton can be a “PITA” to remove, and the removal tool is about the only thing that can totally get rid of it. I’m sure that as soon as you run the tool (and reboot), things will be running normally.
I can’t wait until they (big hardware manufacturers) stop bundling this, well, “crap” that they call A/V programs on their computers. It really is more of a nuisance than a benefit.
You said it m8, not only does it not detect infections properly, but it also uses up most of your CPU to run… Thats my theory anyways…
Back to topic, I ran the removal tool twice and after both restarts, I attempted to run Avast & Both time it crashed… I also went into regedit and looked for anything that had symantic or norton in the name, I found 1folder labeled symantic so I decided to delete it. I then ran the removal tool again, but still no luck… 
did you reinstall avast after using the removal tool of norton?
**I just removed and reinstalled Avast, but still when I try to start Avast! Antivirus it crashes. This time when I start avast! Antivirus, the first time I try, it will crash & then the second time, it works. this will happen continuously, and every second attempt works…
strange ???
can you try running the Simple User Interface 2?
You can find it nomaly in the following direction:
C:\Program Files\Alwil Software\Avast4\ashSimp2.exe
yours
onlysomeone
You just wanted me to try open ashSimp2.exe didn’t you… Anyways I tried running ashSimp2.exe, and it open up with no hiccups…
Yes, thats what i wanted
And you don’t use any other security software besides Avast and windows firewall? (antivirus, firewall, antispyware,…)
have you already run a boottime scan?
you could try to run Malwarebytes Antimalware and/or Superantispyware to make sure you are not infected…
I do have sandboxie as well, nothing else… I havent done a boottime scan, since re-install… I’ll do one now and see if it helps, as for infections I hope not, but I guess i’ll try them options too…
thanks
You might have to remove avast with the avast removal tool as well. Get back to a clean slate, you know?
Then, you can try installing avast again, and see if the problem has been fixed.
You can get the removal tool from here: http://avast.com/eng/avast-uninstall-utility.html
I tried using avast uninstall tool but avast still crashes. I also noticed that when I open my browser, I don’t get the avast script blocker popup, I completed a scan with malwarebyts anti-malware and it came up clean, but Im not confident that my pc is fully protected.
Same problem here, truly frustrating. Nothing fixes it, Avast won’t issue a refund.
Try uninstalling it in Safe mode
Uninstalling and Reinstalling has been no help, I’m afraid, nor has repairing it or removing all other fragments of Antivirus programs. I think it’s just incompatible with some vista systems.
avast is fully compatible with Vista in any system…
I think remains of Norton (or whichever other antivirus you had) are messing the computer.
Not to seem like an ingrate. but that’s not it. There isn’t even a thought floating about my computer over Norton or any other antivirus program. This is a serious bug. I wish Avast would either look into it or give those of us with this problem our money back.
Hi there Mjolnir07 and husskii
Neither of you have provided any kind of substantive data to shed more light on your problems.
Even a HiJackThis log would provide some indication of whether Avast engine sits proper with your operating system, devices and contributing software. What about MBAM scan and attach log to reply post? What is Avast telling you - right-clik ‘a’ icon in tray at bottom right-hand corner of screen, and choose ‘avast! Log Viewer’. Check errors.
The replies you are recieving from the forum are only as much as you can expect. Please provide some solid information.