Hello,
First of all, was the "auto-update" for the drives firmware (from plextor's
web site) or an update for windows? May help if you can post the update
number if it was a Windows Update. You said that you had a PX-760A. Are you
getting this from the drive itself or from Device Manager? (I used to be part
of Plextor tech support and had customers think that Device Manager was
correct. this assumsion is incorrect). Best way to tell is if it in an
interal drive (and not attached to SATA) then it's an A. if it's external
then it's a PX-760UF. Reason I ask is the technical steps will vary on this
information.
Assuming it's internal (and not SATA), I would first remove the devices from
device manager. restart your computer. see what you get. if the issue still
occurs then check the cable. Make sure it is not a round ATA cable. This
causes major crosstalk issues and may cause problems with communication. If
you are using a flat ATA see if it's a 40 pin cable or an 80 pin cable. If
it's a 40 try using an 80 pin flat instead (the one the drive came with is a
80 pin flat). after switching the cable you may have to remove the devices
from device manager again for redetection. If that does not work I would try
the drive in another computer just to see if it works. doesn't hurt to
double-check. If it doesn't then call Plextor Tech Support. If it does then
you may want to run a selftest. The Selftest instructions are in the manual
that came with the drive. You MUST run the self test with recommended media.
check
http://www.plextor.com/english/support/media_760.htm for media
information. This is important as the test could fail with non-recommended
media when in fact the drive is working. The test is only programmed to run
with recommended media. If the drive ejects the drive is fine. if the drive
fails it will make a colored blink code on the front. if this happens call
Plextor tech support while the blink code is still occuring (they need this
information) and they will handle things from there.
If the drive is external (PX-760UF) then first check that the self test
switch is off (away from the arrow). if it's not turn the device off before
switching the self test off. If that doesn't work. remove the device from
device manager. restart, if that doesn't work. try another USB cable (the one
that came with it should be good). if that doesn't work try it from another
computer (just to be sure). if it works then you may want to reset your USB
controllers. Remove all devices from device manager under Universal serial
bus controllers. then restart the computer. check if the drive is working. if
still no go, run a self test using the same directions as above.
I hope this helps. If there is anything more I can do let me know but
further trouble-shooting should be done with Plextor support team. I am no
longer part of their support team so my information may be out of date.