Today, I started the PC which started fine and used it a while, before shutting down to go out. On my return I powered up, and the PC went as far as the Desktop pic and icons and in the system tray just a few minor icons, not Avast or Comodo. I could do nothing with it. After several restarts it did continue after an exceedingly long delay to start Avast and Comodo, and it was useable again. Later I restarted to see if it would go. Same thing.
By now I was suspecting Comodo or Avast, as both of these had updated. On uninstalling Comodo, that process involving a timely restart. I switched the Windows Firewall back on.
a) does anyone know of any conflicts between latest updates of these two programs,
b)Opine whether the Windows firewall is adequate with a Type 1 o2 router (no idea how to configure it anyway),
c) Recommend an alternative free firewall
o2 Broadband Standard, Type 1 o2 router, Avast Free AntiVirus 5.0, [s]Comodo firewall 5.0[/s]