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Semi-OT: PC won't start with USB-LPT plugged in

02/03/2016 - 23:30 von Joerg | Report spam
Folks,

This is weird: USB to parallel adapters seem to not be liked at all by
Windows 7 PCs. I am now testing #4. #1 through #3 all failed because the
Windows 7 won't recognized them. All of them also caused the Win 7 PC
not to even turn on anymore with the adapter plugged in. Now I was sent
a replacement for #3. This #4 adapter (finally!) prints to my trusty old
HP5L even from a Win 7 PC but when I turn the PC off it will never turn
on again unless I unplug the USB-Parallel adapter, turn on the computer,
then plug it back into a USB jack.

Ok, I can make some sort of relay box for it that disconnects it and
when I power up the PC lets that come back on with 20sec delay or so.
But that's odd. None of them ever did that on several XP PCs and they
always worked but not on this and another Win 7 PC.

Does anyone have an idea what could cause this?

Regards, Joerg

http://www.analogconsultants.com/
 

Lesen sie die antworten

#1 Joerg
02/03/2016 - 23:32 | Warnen spam
Sorry, Leute, falsche NG ... <gnarf>


On 2016-03-02 14:30, Joerg wrote:
Folks,

This is weird: USB to parallel adapters seem to not be liked at all by
Windows 7 PCs. I am now testing #4. #1 through #3 all failed because the
Windows 7 won't recognized them. All of them also caused the Win 7 PC
not to even turn on anymore with the adapter plugged in. Now I was sent
a replacement for #3. This #4 adapter (finally!) prints to my trusty old
HP5L even from a Win 7 PC but when I turn the PC off it will never turn
on again unless I unplug the USB-Parallel adapter, turn on the computer,
then plug it back into a USB jack.

Ok, I can make some sort of relay box for it that disconnects it and
when I power up the PC lets that come back on with 20sec delay or so.
But that's odd. None of them ever did that on several XP PCs and they
always worked but not on this and another Win 7 PC.

Does anyone have an idea what could cause this?

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