Image Name                   PID Modules                                      
========================= ====== =============================================
rundll32.exe                 252 ntdll.dll, kernel32.dll, msvcrt.dll,         
                                 GDI32.dll, USER32.dll, IMAGEHLP.dll,         
                                 ShimEng.dll, AcGenral.DLL, ADVAPI32.dll,     
                                 RPCRT4.dll, Secur32.dll, WINMM.dll,          
                                 ole32.dll, OLEAUT32.dll, MSACM32.dll,        
                                 VERSION.dll, SHELL32.dll, SHLWAPI.dll,       
                                 USERENV.dll, UxTheme.dll, guard32.dll,       
                                 fltlib.dll, comctl32.dll, comctl32.dll,      
                                 NvMcTray.dll, SETUPAPI.dll, IMM32.dll,       
                                 nvapi.dll            

I have to end the rundll32.exe process to safely remove my USB drive. Given the modules rundll32.exe is running, do you know which running module(s) would prevent the USB drive from being safely removed, and if so is there a more permanent straightforward solution such as changing an automatic service (the list from services.msc) into a disabled/manual service or maybe something else you can think of?