I ran my anti virus software, Norton, to get rid of a dangerous file I just downloaded. Right now it's stuck on a log for a game I downloaded, but I'm pretty sure it's found the virus thing because it says 105 security risks detected and resolved. So, should I close it or keep it running, because it's been sitting on this screen for a while now and would it be okay, if I just went ahead and hopped on the Internet if I can't close it?

Yes you can close it and it just showing the results of the scan and if you find any important in that and the result will be displayed on the right side of the window. Some viruses or infected files cannot cleaned, whether if you want to delete or move to quarantine you can do that manually.

Some antivirus cannot clean the compressed files because the antivirus has limited features those are may be trial versions or free versions. After scanning they will display the results and showing that which files are infected and types of virus, action taken on them, if you find any compressed file check whether that file is realted to you or not and dont just delete all the compressed files.

I suggest you the full version of antivirus has the deep scanning parameters where it scan the total compressed file and cleans that particular in that file so better have the full version of security softwares. Most of antivirus cleans the trojans aswell if they cant download the trojan remover where it cleans the trojans files and have many better features

Or does it go back to the file in my computer which it was located before? Please be clear, I'm 13 and don't understand things too well, ha-ha  But please help me! I won't move anything from my quarantine until I know what things do. I am using Avira Antivirus. The virus found on my computer was discovered four days ago( I think), by the name of "ADWARE/Agent.aeph". It's a malware. I don't know too much about these things, so please be...not too big-wordy. 

Better delete the thing from the quarantine because the virus in the file cannot be cleaned, so the antivirus programme will move the virus into quarantine.

Here you need to know some things where if that is a compressed file, some antivirus programmes like free versions cannot the clean the infected files in a computer so it moves the file to quarantine. if you wanna recover that files and want to delete only infected file, disable the antivirus system and then extract the files and enable the antivirus system, it will scan the the files infected file will be quarantined.

I have faced many problems like this because whenever the infection found in compressed file the antivirus deletes the total compressed file and leads loss of the other files. If you go through the premium versions of the antivirus programmes you will not face this problems but when you are going to extract the infected compressed files you need be careful (infection depends on virus) do at your own risk.