I don’t think ellishk97’s problem is the same; either he installed the betaversion - and then I doubt it would take him two days to figure out the cause if it started right afterwards, or he sticked with the official versions, and then this particular problem couldn’t have manifested.
I had installed Avast Home in 2006 and my system was fine until last week. It gets “stuck in a boot - disk check loop” suddently last week! I had tried to remove interface card one by one but it does “reboot-disk_check-reboot” infinitely. At last, the system boot win2k succesfully after Avast was uninstalled.
After I read this topoc, I download Avast Home 4.8.1282 (setupchs.exe 28528296 bytes). But the problem is STILL not solved ! 
Are there any corresponding minidump files in WinNT\Minidump folder?
They might tell us where the problem is.
Is it safe to attach these files here ?
Do these files contain sensitive personal data ?
No, not because it isn’t safe, but because they are likely to be too big.
The file contains the contents of memory, etc. at the time of the crash, but I doubt they would have sensitive data.
You can use the ftp server to upload big files. Upload them to ftp://ftp.avast.com/incoming - Connect to the link and drag the file into the Right pane and drop it, that starts the upload, you don’t have read access to this folder. Once you have done that post on the forums that you have uploaded them.
Before you do this make sure that the files have unique names so they can be identified as yours, e.g. ellishk97-filename (where filename is the existing file name, so you are just putting four forum name in front of it).
Full dumps are big and may possibly contain sensitive data - but the minidumps are quite small (less than 100KB typically) and they hardly contain more than a small piece of code around the crash (i.e. I’d say you can safely attach them here, but you can also upload them to the FTP, of course).
Thanks for the info Igor.
To Igor and DavidR:
I have uploaded a minidump to ftp. Please take a look.
It is got after v4.8.1290 installed.
??? ??? :-[
I don’t work for Alwil, just an avast user like yourself, so I don’t have access to the ftp site.
Nor do I have the tools or experience to analyse the dump files. So we will have to wait for some input from Igor.
It seems to be somehow related to the USB controlller. Either it’s toast, or maybe there’s some strange device attached to it (?)
Anyway, I could find any connection with avast whatsoever… :-\
I was my fault to not uninstall avast. :-X
ellishk97，Hello to ask you the question that we are all Chinese people
and my email :seeu#msn.cn (#=@) thx