Rebuilding Windows XP almost from "scratch".
I continue the process to restore my PC. Yes I know... this process is not a "system restore". But..."thanks" to Avast all my system restore points destroyed! Also...the drivers corrupted!!! I couldn't even log in to my PC!!!! Not even in safe mode. I had to take out my old IDE HDD from my laptop and to save all my data to an external HDD with the help of an IDE / SATA USB adapter.
And it's done. I spent just a few hours as I wanted to make a new fresh clean install of Windows XP pro.
Of course I have a backup of my system. Now I can use it but...I prefer to make a new one backup.