Windows 10: I dont know whats going on

Dear microsoft answersI don't know whats happening to my antivirus lately but it keeps popping Threats Found - action in needed Detected Trojan:Win32/Autorun!rfn. This happends after i plug in someones usb, i was so scared and unplug it immediately, and i dont know i cant remove the threat now.apologize for my english is bad

:)

 

i dont really know what to do, please help me

Hi,

It seems that most of the possible troubleshooting steps has been exhausted. For now we suggest that you change the default format of your microphone. To do this, kindly follow the steps below:

• To do this right click the Sound icon in the bottom right of your screen.
• Then select Recording.
• Double click the Microphone to open Microphone Properties.
• In Microphone Properties window go to Advanced.
• Under the Default Format choose any of the 16 bit options.
• Click Apply, then OK.

Let us know if you still need further assistance.

Regards.

 

No restart button in task manager

another easy way to kill tasks, download and install Winaero Tweaker(free) and theres a setting to add a Kill non responding tasks using the desktop right click menu. When you place your cursor on the desktop anywhere and right click the option is at the top of the list, Very handy and you dont have to go through all those steps and well Winaero Tweaker has alot of cool Windows tweaks. Just posting a different suggestion, Im sure your ok with what was suggested here.

 

What are these files? I dont know what is going on?

I went to defragment my new laptop and realized that besides the C drive, there are 3 others random ones. Here are their exact names:

• PBR Image
• WINRETOOLS - (which is 14% fragmented and says it needs optimization, but for some reason it wont optimize)
• \\?\Volume{abb1408d-f2e1-4108-a5f7-d8e97ae14085}\ - (that is the exact name which is freaking me out, is this a virus?)

Quick info about the laptop, I bought it recently, and upgraded from window's 8 to 10. It's a Dell.

Im a student with limited knowledge and exams around the corner. I dont want anything affecting my work, but I also dont want to put off anything serious with this laptop. I just want to know what these are and if/how I can get rid of them.