how to factory reset old laptop (Toshiba portege r) ?

volterhortelano99

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Dec 29, 2017
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i tried pressing 0 with power button F8, F5 , F2 all F keys yet no warning for factory reset found
can be fix or not? and how to fix
( i need to reset it because my COOL and HANDSOME friend use his USB without my permission and thanks i got a AWESOME virus thank you) forgive my grammar
 

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