Not recognising any USB devices

Suddenly, from one day to the next, my W10 stopped to recognise any externally connected devices. I've tried using my USB hub, I've tried plugging 4 different usb->micro USB cables(to get the faulty cable out of the equation) to the front of my PC as to the back where the majority of USBplugs are. But nothing. My devices only detect that some sort of power has been connected. I can't transfer any data between devices. It's not only one specific device. It happens to whatever I plug into USB. Regardless if it is a flash drive, my camera, tablet or my phone. It did work perfectly but one morning when I got up from the bed and wanted to transfer some files from the PC to my phone as I needed them for work, I just couldn't do it. The strange thing is that device manager doesn't show any errors in the USB section of the tree. So what's going on here? What happened??

I think it's more than that. Have one of those USB hubs that when you plug the device to and it's detected by the system, light lights on the hub to let you know that device is operational. Now it doesn't even do that. I mean light is off all the time on the hub. But I will try it. Plug devise directly to my PC and follow your steps. We'll see what happens.

I know for sure that any devices I want to plug into my PC are indeed working. I had to transfer some files on the first day USB been stopped recognised by my PC, fortunately, some part of my work already was on my phone, I just need to update it, I grabbed it to work then and plugged it to the PC at work, and yes. It did work. I could transfer files to and from my phone to my heart content.
Edit. The same was with my tablet, camera and flash drive. Different circumstances, but it had the gist.

See if there is any conflicting software by placing your computer in clean boot:

Open administrative command prompt and type or copy and paste these commands:

1) msconfig (in the pop up system configuration > move the dot from normal startup to selective startup > uncheck load startup items > click service tab > in left lower corner check hide all Microsoft services > in the lower right side click disable all > click apply or ok > do not reboot)


2) taskmgr (in the pop up task manager > click on the start up tab > click on status so that the column sorts with enable rising to the top > right click on each row with enable and change to disable)


3) shutdown /r (you will reboot the computer so that it is in clean boot)





https://support.microsoft.com/en-us/...oot-in-windows
How to perform a Clean Boot in Windows 10 - TechNet Articles - United States (English) - TechNet Wiki



Also see if you can update drivers from your computer manufacturer's website.

zbook said:

See if there is any conflicting software by placing your computer in clean boot:

Open administrative command prompt and type or copy and paste these commands:

1) msconfig (in the pop up system configuration > move the dot from normal startup to selective startup > uncheck load startup items > click service tab > in left lower corner check hide all Microsoft services > in the lower right side click disable all > click apply or ok > do not reboot)


2) taskmgr (in the pop up task manager > click on the start up tab > click on status so that the column sorts with enable rising to the top > right click on each row with enable and change to disable)


3) shutdown /r (you will reboot the computer so that it is in clean boot)





https://support.microsoft.com/en-us/...oot-in-windows
How to perform a Clean Boot in Windows 10 - TechNet Articles - United States (English) - TechNet Wiki



Also see if you can update drivers from your computer manufacturer's website.

Performed a clean boot, the only problem was that when I opened task manager from MSConfig, the button to disable, the one at the bottom, was greyed out, so not accessible to me. But restarted disabling anything (hide MS app option was on) and it was exactly the same as before.

The button for disable should be only on msconfig or system configuration.
When you hide all Microsoft services you should be able to uncheck the remaining items either one by one or all at once with the disable all and then click apply or ok. If you are not able to do that there is something else misbehaving.

Check the integrity of the operating system and drive by opening administrative command prompt and typing or copying and pasting:
1) sfc /scannow
2) dism /online /cleanup-image /restorehealth
3) chkdsk /scan

When these have completed > right click on the top bar or title bar of the administrative command prompt box > left click on edit then select all > right click on the top bar again > left click on edit then copy > paste into the thread

Microsoft Windows [Version 10.0.14393]
(c) 2016 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>sfc/scannow

Beginning system scan. This process will take some time.

Beginning verification phase of system scan.
Verification 100% complete.

Windows Resource Protection did not find any integrity violations.

C:\WINDOWS\system32>dism/online/cleanup-image/restorehealth

Deployment Image Servicing and Management tool
Version: 10.0.14393.0


Error: 87

The online/cleanup-image/restorehealth option is unknown.
For more information, refer to the help by running DISM.exe /?.

The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log

C:\WINDOWS\system32>chkdsk/scan
The type of the file system is NTFS.
Volume label is System.

Stage 1: Examining basic file system structure ...
447744 file records processed.
File verification completed.
16586 large file records processed.
0 bad file records processed.

Stage 2: Examining file name linkage ...
545566 index entries processed.
Index verification completed.
0 unindexed files scanned.
0 unindexed files recovered to lost and found.

Stage 3: Examining security descriptors ...
Security descriptor verification completed.
48912 data files processed.
CHKDSK is verifying Usn Journal...
37123640 USN bytes processed.
Usn Journal verification completed.

Windows has scanned the file system and found no problems.
No further action is required.

233916415 KB total disk space.
85416924 KB in 277614 files.
197740 KB in 48913 indexes.
0 KB in bad sectors.
563047 KB in use by the system.
65536 KB occupied by the log file.
147738704 KB available on disk.

4096 bytes in each allocation unit.
58479103 total allocation units on disk.
36934676 allocation units available on disk.

C:\WINDOWS\system32>

Minor update. Just checked in Disk Managment. My phone is connected via USB cable directly to the PC. No USB hubs or nothing. Also, tried 3 different USB cables to get a faulty lead out of the equation again, but regardless, I can't even see any USB connected device in the Manager.