Sounds similar to the problem I have been having with loosing the SD
slot... from an earlier find I posted about this, which I hope helps in
your case;

=================================

One of the ongoing problems with my T4215 has been the disappearance of
the memory card slot after a hibernation... important to me as I use sd
cards extensively.

One fix to wake up the memory card slot is to run device manager and
select "Scan for Hardware changes" ...works, but a pain to run over and
over.

Turns out there is a MS downloadable command line utility that offers
device manager functions called DEVCON.EXE...

<http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q311272>

A bit confusing as the downloaded file "DEVCON.EXE" is actually a zip
containing two "DEVCON.EXE" files... one for 32 bit and one for 64 bit

After extracting, running;

DEVCON rescan

executes the same action as the device manager menu rescan option.

There is also a "restart" argument, but, for the moment, will stick with
"rescan" on the possibility that other hardware may need to be awakened.

Put the above in a desktop shortcut so that it can be activated with a tap.

Hope this is of value,
Beverly Howard