BSOD during startup

Hi everyone! It’s great that there’s a forum for this program, things can get pretty complicated and I’m grateful that a community can help each other. I’m new to Avast and recently I downloaded the home version for one of my old school IBM Aptivas with Pentium II, 96 meg ram or so, Windows 2000 and 98 partition. The avast was installed only on my windows 2000 professional partition, but after when I turned on the computer, it would always go into this blue screen after the windows booting screen, regardless whether I started up in Safe Mode, and it even did it when I tried to boot up in Windows 98. I couldn’t bypass it and I had to shut it down, it’s always like this now with no escape. I tried this thread http://forum.avast.com/index.php?topic=13069.0 but found nothing significant. The advice the blue screen suggests is not at all fit for me as I don’t have any new drives, nor can I check for viruses when my computer is stuck. Anyway here’s what the blue screen said, if anyone can help I would appreciate it…

[i]***STOP:0X0000T8…>INACCESSIBLE_BOOT_DEVICE

If this is the first time you’ve seen this stop error screen, restart computer. If this screen appears again, follow these steps: Check for viruses on computer. Remove any newly installed hard drives or hard drive controllers. check your hard drive to make sure it’s properly configured and terminated. Run CHKDSK /F to check for hard drive corruption, and then restart your computer.

Refer to your Getting Started manual for more information on troubleshooting stop errors[/i]

I think that must have been a ‘7’ not a ‘T’ in the error code. The first thing to try is probably a disk check.

This error can also be a result of hard disk corruption. Run Chkdsk /f /r on the system partition. You must restart the system before the disk scan begins. If you cannot start the system due to the error, use the Recovery Console and run Chkdsk /r .

http://www.microsoft.com/technet/prodtechnol/windows2000serv/reskit/prork/prhd_exe_qhzo.mspx?mfr=true

It’s quite hard to bypass this BSOD and boot to UI.
This error appears when one of your boot drivers doesn’t load properly. Since all avast drivers are not loaded at boot time, they’re not under suspicion.

Try Last Known Configuration or Repair your OS from installation CD.

I’ve tried Last Known configuration the same thing happened. Now I’m going to try reinstalling Windows 2000 from the cd. How come this only happened after I installed Avast, if avast isn’t responsbile for this?

Guessing: interaction with OS or interaction with a previous antivirus installation (or bad uninstalled). Other security programs could interfere either (like firewall).

i see. But is it generally a bad idea to run a firewall with avast? I have comodo but I haven’t experienced any problems yet

No, on contrary, it’s good and necessary a firewall, as avast is not a suite, just an antivirus.
But conflicts could happen, specially with firewalls with antivirus or antispyware integrated.