Good suggestion, but I checked and the IDs are the same. I have now tried the thumb drives on a couple of other machines and one or two of them are not recognized, depending on the machine, so the problem seems to be with two of the drives and not the laptop. The one drive that was okay on the laptop is the only one that’s consistently okay over 5 different machines.
Interestingly on a Windows tablet that I own, there is a USB2 slot on the tablet itself and a USB1 slot on the removable keyboard. Two of the drives don’t work on USB2, but one of them works on USB1. Seems like a lost cause because of all this inconsistency. I don't understand what could have changed with them, since they had been working fine for several months, but at least they were cheap. On Mon, Nov 27, 2017 at 4:52 PM, Michael B. Smith <[email protected]> wrote: > Is the PNP string for all 3 exactly the same? > > > > *From:* [email protected] [mailto:listsadmin@lists. > myitforum.com] *On Behalf Of *Charles F Sullivan > *Sent:* Monday, November 27, 2017 4:06 PM > *To:* [email protected] > *Subject:* [NTSysADM] "Good" Thumbdrive not Recognized > > > > This may be way OT, but I'm mystified and I'm more likely to get a good > answer here than anywhere else.... > > > > I have three identical thumb drives (PNY UltraFit). All three have Windows > 10 To Go installed on them and I've used them for months on my laptop, > until lately..... > > > > Suddenly only 2 of the 3 thumb drives are recognized by the laptop. If I > boot into the OS on the fixed drive these 2 will not show as USB devices at > all, let alone as disks. I also can no longer boot off of them, so it's the > laptop not Windows. Again, one of the 3 is still recognized and bootable. > > > > That may not seem so odd except that all 3 thumb drives are recognized and > bootable on the two other machines that I have tried. > > > > I just can't make sense of this. So far I've updated the BIOS on the > laptop and after showing hidden devices in Device Manager, deleted all > instances of them. Not surprisingly this made no difference. > > > > Can anyone explain this? > > > > -- > > Charlie Sullivan > -- Charlie Sullivan Sr. Windows Systems Administrator Boston College 197 Foster St. Room 367 Brighton, MA 02135 617-552-4318
