On 5/4/2018 8:56 AM, NY wrote:
My Windows 7 PC has a front panel with various card readers (SD, CF, etc) in
a module that is connected to a USB header on the motherboard.

Usually the SD reader recognises that I have inserted a card and adds it to
the list of known drives in Windows Explorer. But sometimes it fails to do
so (it's as if I've not inserted a card), and the only remedy is to reboot
or logout/logon.

I'm not sure whether this also applies to the CF drive because I don't use
those cards.

It's not poor contacts because I've tried removing and reinserting the card,
wiggling it, pressing it up/down in the slot. No change. Once I've removed
the card and later reinsert it, Windows simply does not recognise that it's
there. And that is for a variety of cards. I've even tried swapping the card
reader module with one from another PC, and still the fault persists.

The SD-only reader in my laptop (which is also Windows 7) never experiences
this fault, so it's not a generic Windows 7 thing.


I had occasional problems with USB connections, most noteworthy with my
printer. The printer would very often give me the blue screen of death
(BSD) right after printing. Switching its plug from a USB3 port to a
USB2 port eliminated those problems. The printer has not given me a BSD
in over three years.

Backwards compatibility -- using a USB3 port for a USB2 device -- is not
always error-free.

--
David E. Ross
http://www.rossde.com/

First you say you do, and then you don't.
And then you say you will, but then won't.
You're undecided now, so what're you goin' to do?
From a 1950s song
That should be Donald Trump's theme song. He obviously
does not understand "commitment", whether it is about
policy or marriage.