The phrase "jiykr" is not a legitimate hardware manufacturer. There is no reputable company—such as FTDI, Silicon Labs, Prolific, or even generic Chinese brands like HL340—that produces a cable or driver named "Jiykr."
Since "Jiykr" does not exist, you likely have a or a clone programming cable (e.g., for CH340, CP2102, PL2303, or FT232 chips). Here is the safe method for Windows 7. jiykr programming cable driver windows 7 extra quality