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Windows 7: Parallel port (LPT) not working in 7

26 May 2009   #1

Windows 7+XP+Vista
Parallel port (LPT) not working in 7

I've been using Windows 7 RC1 as a clean install.

The computer has multiple drives and I have on each something else installed (XP, 7 and Ubuntu).
I first noticed I couldn't print to my LPT printer in 7 (it works in XP and ubuntu). Then I plugged in some other stuff. Everything works in the other OSs but in 7 the parallel port doesn't seem to be working.

Any ideas? I'm stumped.

My System SpecsSystem Spec
20 Oct 2009   #2

Win7 Ultimate x64

Google doesn't show any problems relating the parallel port and Win7. Drivers is the first thing I'm thinking. Can you find the parallel port in device manager (Win+R, type devmgmt.msc)? If it's not working, it should be under Other Devices with a yellow exclamation mark and may be called Unknown device.
My System SpecsSystem Spec
20 Oct 2009   #3

Windows 10 Pro (x64)

Parallel i'll be surprised if you printer even has drivers for windows 7...
My System SpecsSystem Spec

20 Oct 2009   #4

Windows 7 x64 HP, Windows 7 HP, Windows 7 Ult

I have a Brother laser printer hooked up to one of my machines via parallel port, works like a champ - even have it shared... :)

The trick is to get the parallel port driver from the manufacturer (or off of the CD that probably came with the printer) and load it in. If that doesn't get it installed, then go to the control panel, devices and printers, and have Win7 look for the printer. It should find it, but may not find a driver. Browse to the install folder and it should find the ".inf" file it need to do the install.
My System SpecsSystem Spec
20 Oct 2009   #5



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Parallel port (LPT) not working in 7-capture.png 
My System SpecsSystem Spec
20 Oct 2009   #6

Win7 Ultimate x64

That's odd. I found this on the first page...
My System SpecsSystem Spec

 Parallel port (LPT) not working in 7

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