system
1
hi im new to this and very green so any help would be most greatfull, when i download free avast when i exe it at the end it always says file corrupt or it was spawning try again, i have deleted cache
Welcome to the forum. 
Are you downloading and saving the file to your computer or, are you trying to run it
directly from the download ???
Always download and save the file to your computer. Were are you getting the download from and which version of avast are you downloading ?
system
3
Where are you downloading Avast from? Did you remove your previous antivirus first. Download Avast right from here.
http://files.avast.com/iavs5x/avast_free_antivirus_setup.exe
system
4
from site called cnet, previous 1 was uninstalled, tried your link same thing it reads. an error 0 (oooooooo) has occured, Last performed operationwas ; spawning
system
6
No need to run the Avast Uninstaller cause he never installed Avast. His downloads are corrupted. Maybe be malware related and or a Windows error problem.