Search for the specific hardware model number (e.g., Huawei E3372, ZTE MF833) on the official manufacturer support page to get the official, clean driver package.
Double-click the drive and locate the or Install.exe file. Right-click the file and select Run as Administrator .
Go to Device Manager > Network Adapters , right-click on the modem entry, and select "Update driver."
Try using a different USB port, preferably directly on the motherboard (rear ports for desktop PCs).