USB 'Pen Drive' is now an 'Unknown Device' and I've tried everything!

  • Thread starter Thread starter Daryl
  • Start date Start date
D

Daryl

Hi,
I've been scouring the newsgroups for answers to the following problem and
have tried everything suggested to no avail...

My USB 2.0 Pen Drive was working fine until today. It now shows as unknown
device and windows reports that it may not function correctly. It doesn't
work at all!

However, I took it to work with me and (on a USB 1.1 PC) it worked well.

When I returned home, I tried again in my PC to no avail. I then tried
uninstalling Root Hubs and Controllers and the like as suggested in many
newsgroups and the thing sprang back into life. However, as soon as the
Enhanced USB driver is detected, the pen drive vanishes and the 'unknown
device' returns.

I've been into safe mode, I've tried to delete the VID keys from the USB
section of the registry (which won't delete even though I log in as the
administrator) and I've removed all USB devices and then uninstalled all
hubs and the like and let them reinstall themselves.

I now have my Pen Drive working in (I assume) 1.1 mode by means of
'disabling' the 'enhanced host controller'. As soon as it is re-enabled I
lose my Pen Drive and return to 'Unknown Device'.

XP says that my 'Enhanced Controller' has no problems.

Please help - everything was fine yesterday and a restore does no good at
all. Why can I not delete the VID keys?

Thanks in advance,

Daz
 
Daryl said:
Hi,
I've been scouring the newsgroups for answers to the following problem and
have tried everything suggested to no avail...

My USB 2.0 Pen Drive was working fine until today. It now shows as unknown
device and windows reports that it may not function correctly. It doesn't
work at all!
Click to expand...

Oh well, no help forthcoming here but I've fixed it now anyway. I've been
given support suggesting that I should delete registry keys, reinstall
windows, restore, etc etc. All help was gratefully received but
unfortunately didn't sort the problem. Then I had a brainwave - unplug the
power lead from the wall. It did the job! Either my motherboard needed
some sort of 'reset' or perhaps there was a build up of charge or something?

Anyway, I thought I'd post the solution here in case anybody else ever
suffered from the same problem. :o)

Daz
 
Back
Top