[HELP] I think I'm infected with UNKNOWN malware/virus

I have a newly bought laptop, an Acer Aspire E 15. What that lead me to think that I'm infected is because when I tried to visit my Windows folder (because I was searching for 'SystemApps' folder to disable Cortana) I saw random weird files with random names and all of the are 1KB only.


I have not done anything yet. I have an Avast Free installed and a Norton pre-installed when I bought it.
Please help me.

NOTE:
I don't want to reformat it, I was traumatized on windows update, I don't want to download updates that took 2 days making my laptop unusable because of resource hog of windows updates.

EDIT:
I tried to delete them and checked them every time if they will return and they did not so I stopped checking it but a little while ago, they appeared again.

I would get rid of the Avast, keep the Norton and get Malwarebytes, Run full scans with both Norton and Malwarebytes. If you don't come up with anything don't worry about it. Pay for Malwarebytes so that it will run full time it great for malware and ransomware, I pay for Norton more because I always have, and it plays well with Malwarebytes Together and personal responsibility I feel pretty safe I take all the warning serious that both programs notify of and don't unblock them unless I am completely sure of the file or program.

As far as all those files go just google them they could be tied to any program even maybe Avast.

To Disable cortana Enable or Disable Cortana in Windows 10 Windows 10 Tutorials

If your convinced your infected, and don't feel you can resolve yourself, Norton has pretty good tech support, I have no Idea if Avast does or not but since if you got a virus or malware using there product they would be the best ones to identify what you have and how to get rid of it.

wait wait wait, I'll follow your instructions @simrick I'll update ASAP Thank you all for your replies!
I'll stick with nortron too @Clintlgm
@Bree How harm is sality is?

@simrick the unsigned one was detected by Windows defender as a Trojan

Here's the results.
RKill
AdwCleaner
RKill (2nd)

What's Norton Tool?

I found the Norton Tool that @simrick talking about, it's the Norton Power Eraser. And it says no threats found.

I run as admin the AVG tool and It just opened and somewhat scanned so fast and close itself too. So I don't know what really happened.

Right now I'm scanning using the Kaspersky tool. I will update again ASAP when it finished.

Kaspersky Tool somewhat stuck for already 30 mins. and looks like it doesn't do anythings else, no success or fail messages appears. So decided to close it and will start it again later on. I'll update again here ASAP.

bump

I still have these annoying files and I'm scared from what it can do to my pc