Hi Yuganhara. I'm Greg, an installation specialist and 8 year Windows MVP, here to help you.
It is not normally a virus, but means the System files have been unhidden and is showing the System Volume Recycle Bin for that drive. Hide System files in File Explorer > View > Options > Change Folder and Search Options > View > disable Show Hidden Files and check Hide Protected Operating System Files, approve security box, Apply, Save.
But to be sure go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done: http://answers.microsoft.com/en-us/windows/wiki...
Start with Step 4 to turn off Startup freeloaders which can conflict and cause issues, then Step 7 to check for infection the most thorough way, then step 10 to check for damaged System Files. Then continue with the other steps to go over your install most thoroughly.
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.
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