Problem after upload firmware

[dejzar]

Hi, I'm upload this sketch https://prnt.sc/1192zzl to my arduino pro micro and after reconnect my board don't defined https://prnt.sc/119351q (Unknown USB device (device descriptor request failed)). Please help me. I'm try to install driver from program files/arduino/drivers.

[Ekristoffe]

I know it's a long shot but have you selected the right speed in the arduino IDE ?
Under Tool / Processor