Ransowmare and cannot do anything

My pc got a ransomware called "Ebola Stealer" whenever I try to start my pc it shows as the picture below, when I try to boot via a USB it says it is missing files to do so, neither safe or normal boot works, please help me out so I wont need to buy a new PC.

My pc got a ransomware called "Ebola Stealer" whenever I try to start my pc it shows as the picture below, when I try to boot via a USB it says it is missing files to do so, neither safe or normal boot works, please help me out so I wont need to buy a new PC.