LS990 not connecting (LG2.1.8)

pc not detection phone as modem at all
ive installed these correct drivers…_ver_3.8.1.rar…dADBDriver.exe

flashed with version 4 & version 8 TOT (files converted localy) but same….
possible connection is only (charge phone ,, media device (mtp),,,send images (ptp) )

in android tab same connecting issue ( even its conection with other softwares

now downloading this file from support and trying once again till support replay