jow to open my pc bow?

Aug 11, 2018
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some video & software was transfering by the pendrive few hours ago..At now,when I try open this pc, he gives some option.and this is
Choose Language
Choose your keyboard layout
Choose an option:
1)Troubleshoot
2)Turn off your pc
At present how do I do?pls answer
This pc is new.ACER_ core i5_ generation 8