My system is 

System Summary

	Inspiron 660
Service Tag	<ADMIN NOTE: Service tag removed per privacy policy>
Express Service Code	<ADMIN NOTE: Express service code removed per privacy policy>

		Microsoft Windows 8.1 (64-bit)
	Build Number	9600
	DirectX Version	11
	Windows Directory	c:\windows
	System Directory	c:\windows\system32
	Maximum OS Memory	128.00 GB

I have a corrupt file and was going to wipe hard drive clean and reset back to factory default. As I am not too computer literate. Do I just do a format then shut down insert USB and turn back on?

any and all info would be grateful.