First is: virus win 32:small-IES [trj] on file name C:\RECYCLER\S-1-5-21-593324574-2427011219-1836630465-1005\Dc337.avi
This seems a big file. What about emptying your recycle bin?
Are there other users in this computer?
Second is: virus win32: MyTob-TE [Wrm] on file name C:\WINDOWS\MEMORY.DMP
You can delete this file. This is a dump file, generated when Windows crashed. It's safe to delete.
Third is: a Function setifaceUpdatePackages() has failed. Return code ... dwRes .....
This is an avast error... maybe you can Which is your Windows? 98, Me, XP?
Do you use any other antivirus in your try to repair your installation?
Go to Control Panel > Add/Remove programs > avast! antivirus > Remove. Then choose Repair function in the popup window (Repair).
My max size of chest setting is 256 MB. What is the recommended chest setting anyways? Thanks in advance for your help.
It's ok to keep this size. Indeed that two big files should be deleted and don't need to be put in the Chest. If you want to do with one of them, choose the avi one. See its size and set avast Chest for a bigger one.