How to reset a acer aspire 5515 computer to factory settings

[ToastedPixels]

okay so im on an acer aspire, and for the life of me i can't figure out how to factory reset it, its got way too many viruses on it to do anything else with it, im on an acer aspire 5515 and i could use some assistance, feedback would be appreciated.

 

[phil22]

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