![]() Remember to replace # with the number of the inf file you want to delete. (use space between exe & - and d & Oem then press enter) Note all oem#.inf instances of the prolific driver where # (hash) is the number. ![]() Its highly likely you will have multiple entries from previous attempts. Read the entries in the output to find the description of your package(s) and its file name(s) The driver store is a protected area of the computer that contains device driver packages that have been approved for installation on the computer You need to Identify OEM#.inf where # is a number so type 2nd Stage Again from Elevated Command Prompt - Remove Driver Packages from drivers store.1st stage As discussed from command prompt type ĭevmgmt.msc Under Ports (Com & LPT) delete all instances of prolific USB to Serial Comm Port.Ie type cmd in search bar then right click cmd.exe selecting Run as Administrator The Computer Management system has cleaned up the Arbiter, but not cleaned up the Software section. So only the "Arbiter" setting seems to be telling the Win7 system what is really "in use". All the other settings up to 7 that used to be "in use" are now freed up. Shows COM1 with COM2 "in use" and COM3 "in use". Right click on COM1 / Properties / Port Settings / Advanced Note: after cleaning out all my phantom ports, leaving only "COM1", I find my Registry shows: Hardware: COM1Īnd a right click on Computer / Properties / Device Manager / Ports shows only COM1. This should now have cleared out your system of unwanted phantom USB ports. One by one, right click the phantom ports, and select Uninstall.Now all the ports, real (black text) and phantom (grayed out text) appear. Click View and select Show Hidden Devices. ![]() This shows the Computer Management window.
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