On Jun 22, 6:50*pm, Paul <nos...@needed.com> wrote:
> Roy wrote:
> > On Jun 22, 4:04 pm, Paul <nos...@needed.com> wrote:
> >> Roy wrote:
> >>> Hello group
> >>> Recently I *was dismayed why my USB drive was not recognized anymore
> >>> by window explorer. Therefore if I *plug it on the USB slot it does
> >>> nothing. I searched the web for some ideas and came from this fellow
> >>> which states:\
> >>> 'A user of a company I know recently told me the following experience
> >>> he had with a USB flash drive. The user traveled a lot and had a
> >>> laptop that he used to connect to the company's network when he was in
> >>> the office. And he was used to plugging his flash drive into the USB
> >>> slot on his laptop so he could transfer files to another machine he
> >>> used at home. But one day he came into the office, connected his
> >>> laptop to the network, plugged in the flash drive and nothing happened
> >>> -- normally an Explorer window would open displaying the contents of
> >>> the drive. This was disconcerting, so he opened My Computer and
> >>> discovered that the USB drive wasn't there. Puzzled by this, he took
> >>> out another flash drive from his pocket and tried it, and this time it
> >>> worked fine so he knew at least the problem wasn't with his computer.
> >>> He was just about resigned to throwing out his first drive when he
> >>> decided to send me a quick email detailing the problem. My immediate
> >>> reaction too was that it was that the drive had failed, but then I
> >>> thought about it some more. One of the key steps in troubleshooting
> >>> problems is to ask what just happened. The drive failure had occurred
> >>> after he connected his machine to the network, so could it be an issue
> >>> with the network? I emailed back and suggested he disconnect his
> >>> laptop from the network and try the flash drive again, and a short
> >>> time later I received an email saying the drive now worked!
> >>> Then it dawned on me. I told him to remove the drive, connect to the
> >>> network and open My Computer again and look for something different.
> >>> He did this and told me there was a new mapped network drive that he
> >>> hadn't seen before. Aha! The network administrator must have modified
> >>> their logon script to map a new drive on users' computers, and this
> >>> new mapped drive probably assigned the very same drive letter that
> >>> this particular user's laptop had previously assigned to his first USB
> >>> drive. I told him to plug the USB drive in again, open Computer
> >>> Management, and change the drive letter of the USB drive. He did this,
> >>> and right away an Explorer window opened displaying the contents of
> >>> his USB drive. Problem solved'
> >>> Since I have never done such things these ideas sound strange to me.
> >>> Meaning if the drive is malfunctioning it might have something to do
> >>> with such and not a hardware fault.
> >>> Although I was not using a laptop but just a desktop PC.
> >>> I did found the computer management ( local) and had viewed the disk
> >>> management on the right pane.
> >>> Indeed there are letters that indicates one drive say for example
> >>> Drive D and drive C which is easier tounderstand as well asthe Drive E
> >>> and F *and so forth. Previously the Flash drive was recognized as
> >>> Drive G and J as well as drive H for *another External hard drive.
> >>> But now it does not recognized my flash drive.
> >>> What I don't understand is why window explorer does not recognize my
> >>> USB flash drive but still do with the other drives.
> >>> Early this morning I was plugging these drives to the networked
> >>> computer in the internet cafe and immediately it was not recognized
> >>> and this kept me worried so when I arrived home I immediately plugged
> >>> it and there the flash drive is not functioning or being recognized
> >>> anymore.
> >>> Could somebody offer me their advice how to sort this out
> >>> What is going on?
> >>> TIA
> >>> Roy
> >> Uwe Sieber has a web site, with that kind of information on it.
>
> >>http://www.uwe-sieber.de/usbtrouble_e.html
>
> >> *From a hardware perspective, you can verify that the plugged in
> >> device is being detected (communicated with), via UVCView program
> >> from Microsoft. (Use the upper right hand link, to download an
> >> executable for Windows 32 bit OS.) This is an archived web page,
> >> as Microsoft has taken down the download page. There have been
> >> several versions of programs that look like this one, and so far,
> >> this one is the most capable. (Some of the originals, had limits
> >> on the number of ports they could handle.)
>
> >>http://web.archive.org/web/200705160...crosoft.com/wh....
>
> >> If the physical layer is working, and the USB device can be
> >> enumerated, and fill the window with data, then the problem
> >> must be at a higher level in software. (In the picture here,
> >> you can see VID/PID 0x0ECD 0xA100 device has been detected, and
> >> the presence of the Endpoint Descriptor presumably means a
> >> communications path is set up.)
>
> >>http://www.die.de/blog/content/binary/usbview.png
>
> >> For resetting the USB stack, usbman.com has a page describing a
> >> procedure to do in safe mode. But this doesn't necessarily fix
> >> everything. There are also instances where a driver cache is
> >> corrupted, or the registry is locked to updates, that might
> >> cause a procedure like this to not fix anything. But in those
> >> cases, searching on the exact error text, will likely lead you
> >> in the right direction.
>
> >>http://www.usbman.com/Guides/Cleanup...%20Safe%20Mode....
>
> >> HTH,
> >> * * *Paul- Hide quoted text -
>
> >> - Show quoted text -
> > Thanks !. sounds complicated and Microsoft is cautious about
> > installing hotfixes which may not be the solution to the problem
> > I did try to follow a certain procedure
> >http://www.port-huron.k12.mi.us/tech...bflashdrivetro...
> > But it when I right my computer- choose manage- Storage- disk
> > management
> > Then I right clicked the listed removable disk then change drive
> > letter and paths
> > And want to assign a new drive letter.
> > I was given a warning that *changing the drive letter might cause
> > problem that the hardware connected might no longer run so *stopped
> > there.
> > I also tried to create another drive letter but it says the letter was
> > not recognized.
> > Creating a new folder *needs that you need another path, but when I
> > browsed I only find that there are two path- the C and D drive.
> > So I got lost here and would need some suggestion from people that are
> > familiar with this methods.
> > Thank You!
>
> Have a look at this page. The Drive Letter Manager
> might be able to change a USB drive letter for you.
> I haven't used it, because I don't have any USB flash
> devices here.
>
> http://www.uwe-sieber.de/usbdlm_e.html
>
> * * Paul- Hide quoted text -
>
> - Show quoted text -

Thanks, I will have to read first the literature about its use.
BTW, is there anybody here have experience about USB drive
overvoltage? What I mean I am not discounting the fact that the
desktopPc might have fried circuitry and this is an additional worry
for me. I was thinking that some computers might have higher USB
voltage rating for USBs than laptops?
Is there a likelihood for such to happen?
I just hope that this hardware is still intact...