Open an elevated command prompt. Press the Windows key + X. Command prompt as admin. It may say Powershell as admin. If that is the case when powershell opens type cmd at the prompt to the command shell.
Type the following commands
select disk X Where X is the number associated with your 128GB flash drive. Be very careful and make sure you are selecting the correct number
clean This will wipe all partitions off the drive. This is why you need to make sure you are using the correct number. You do not want to wipe your hard drive.
create partition primary
format fs=ntfs quick
Remove the flash drive and attach again. Does Windows detect it? If you want to format to fat32 substitute fs=fat32 for fs=ntfs