USB Drives not recognised in Windows 10

I have just updated from Windows 7 to Windows 10 and when I plug in a any USB drives are not recognised.

I have tried a USB stick which worked but not drives do not.

Any suggestions as all worked in Windows 7.

Thank you.

Just noticed that USB drive is seen in Safely Remove Hardware and Eject Mediaand in Devices and Printers.

The problem is that when I go to File Explorer -> This PCI do not see drive.

Any help would be appreciated.

Thank you

Please fill in your System Specs, or post what they are.

Operating System

Windows 10 Professional (x64) (build 10240) Install Language: English (United Kingdom) System Locale: English (United Kingdom) Installed: 02/08/2015 00:58:01 Boot Mode: BIOS (Secure Boot not supported)

System Model

TOSHIBA QOSMIO X500 PQX33E-00N006EN Enclosure Type: Notebook

Processor

1.60 gigahertz Intel Core i7 Q 720 64 kilobyte primary memory cache 256 kilobyte secondary memory cache 6144 kilobyte tertiary memory cache 64-bit ready Multi-core (4 total) Hyper-threaded (8 total)

Main Circuit Board

Board: TOSHIBA QOSMIO X500 Bus Clock: 133 megahertz BIOS: TOSHIBA V2.80 09/07/2010

Drives

1424.32 Gigabytes Usable Hard Drive Capacity 434.03 Gigabytes Hard Drive Free Space MATSHITA BD-MLT UJ240ES [Optical drive] ExpressCard SSD [Hard drive] (32.20 GB) Samsung SSD 840 PRO Series [Hard drive] (512.11 GB) Samsung SSD 850 EVO 1TB [Hard drive] (1000.20 GB) ST310003 40AS USB Device [Hard drive] (1000.20 GB) ST340063 2A USB Device [Hard drive] (400.09 GB) THROTTLE [Hard drive] (32.30 GB)

Memory Modules

16374 Megabytes Usable Installed Memory Slot 'M1' has 8192 MB Slot 'M2' has 8192 MB

The above was taken from Belarc Advisor and as you can see there are 2 USB drives.

As stated the problem is that when I go to File Explorer -> This PC I do not see drives.

All help appreciated.

Thank you.

Regret I am unable to assist, but noticed your post after I posted mine (WD drives not recongized).
So it seems the issue not limited to WD . . . Still weird though.
Everything worked fine in Windows 7.

Does it show up in device manager under disk drives and also disk management?

Solved problem by going to disk management and assign drive letter to drive to USB drives.

Does it show up in device manager under disk drives and also disk management?

They didn't show up there either.
I did another clean install , switched on: nothing
and again a clean install (yes... indeed 2x)

After the 2nd oclean install and after turning on the drives, two showed up.

Rebooted with all drives turned on and now, finally, they all showed up.
Did this ' safe remove ' thing. All drives correctly removed.

Kept the drives running. though..

Rebooted again, just to make sure they would show up again. Nothing.
Turned off and on again and they showed up.

Timebeing situation is solved.

Now trying to find a solution for the next problem: Samsung magicion reporting it is not properly communicating with Samsung SSD. Guess it has something to do with IRST as it does not display my RAID-set.

Same problem here. How do you assign drive letters (when it sees it and gives it a number?

My USB3 WD 2TB Passport appeared online as soon as I plugged it it. I'm running WIn10 Build 10240 with all the latest fixes.

Perhaps the problem is with USB2 drives? I do know that people with 3D printers that use USB2/Serial ports cannot see their printers at all. Seems there is a bug in 10240 having to do with the USB/serial interface. I'm nto sure if this has anything ot do with external disk drives though.