Just recently my pc restarts itself on its own. when i send the log to microsoft it says it is a problems with anti virus software. i have re installed the software but still getting the problem. any ideas anyone
We will need more information to be able to help you:
- Which OS are you using? Is it up to date?
- What avast! version and VPS file (virus database) number?
- Which actions have you taken to try solving the problem?
- Do you use a firewall? Which one?
- Do you have any other antivirus installed in your system? Did you have in the past?
- Any other security programs that could interfere?
- In XP/Vista, is there any useful information into Control Panel > Administrative Tools > Events, specially ‘Errors’?
Please, post a screenshot (see how: http://forum.avast.com/index.php?topic=8982.0).
You can use Gadwin PrintScreen to get a screenshot (http://www.gadwin.com/printscreen/) or the free version of WinSnap 1.1.10 (http://www.filehippo.com/download_winsnap/?2173).
Go to folder \windows\minidump and send the newest (recent) .mdmp files for analysis.
Better if you can compress (zip) them and add some information about the BSOD and the link for this thread. 
Send an email to any of these addresses:
vlk (at) avast.com
rypacek (at) asw.cz
Or upload to the any of these anonymous ftp servers:
ftp://ftp.asw.cz/incoming
ftp://www2.asw.cz/incoming
Also, check the folder \data\log
Are there any files called unpXXXX there (where XXXX is a random number)?
If so, send them to vlk (at) avast.com
They may contain more information about the problem (maybe a link to this thread).