Qualcomm Qcser.inf //top\\

Navigate to > Advanced Options > Startup Settings and click Restart .

This usually occurs when attempting to install the driver by double-clicking and selecting "Install" from the right-click menu (also known as the "legacy" method). Windows may reject the installation due to security settings or driver signature issues. The solution is to use the alternative PnPUtil method via the Command Prompt, which is explained in the step-by-step guide below. qualcomm qcser.inf

Right-click the problematic or unknown Qualcomm device and select . Choose Browse my computer for drivers . Navigate to > Advanced Options > Startup Settings