Problem description

I need some advice with a tough PC driver problem. I have an exotic smartphone (Hero H2000+) which isn't recognized/shown as portable device in Explorer when I plug it into my PC. It shows up with an yellow exclamation mark under device manager. The device itself is set as MTP and USB-Debugging is off.

I already found a working driver but it doesn't start correctly. I can right-click the device and select uninstall. After that I manually Scan for hardware changes and Windows recognizes & reinstalls the portable device. Presumably with the same driver since I cannot tick Delete the driver software for this device.

Now comes the strange part: Normally you would expect that the yellow exclamation will come back after the driver installation. But no! The device is now fully functional and visible in Windows Explorer. First I thought "Hey! Finally I have a working driver".

But this only lasts until the next PC reboot. Then the exclamation is back and I have to repeat the above procedure.

What I have tried

Searched and deleted all related unused drivers: devmgr_show_nonpresent_devices=1 » Show hidden drivers

Q1: Why doesn't Windows recognize my device even when it already has a proper driver? And how can I fix this

Q2: Can I somehow assure that those driver INF files showed in the Gif below are only for my portable device and save to remove? Or are those default Windows driver files?

Before and after driver uninstall & reinstall process

Live demo

Edit #1 (after driver installation on second PC)

The description under device status is

Windows cannot initialize the device driver for this hardware. (Code 37)

I plugged the portable device into a second PC where it never was plugged in before. It doesn't show the same behavior. A Microsoft driver was installed without issues and stays normal after a reboot. That was not the case when I installed the device on the first PC half a year ago. Something changed and Microsoft has now included his own driver version for this device.

Q3: How can I do a fresh driver install so the MS drivers will be used?
(Remember, no checkbox while uninstalling!)

enter image description here

These files seem to be important. Can I really delete them? Will Windows reinstall them if needed?

Edit #2 (after DriverMagician)

I used Drivermagician to backup the driver (uploaded at ge.tt) from the second PC where it is working.

After this I uninstalled the faulty driver on first PC and preventing automatic driver installation via gpedit.msc. Rebooted, still uninstalled, good.

Used normal device manager dialogs to install the driver using drivermagician backup. Installed successfully. Rebooted. Exclamation mark is back...ARGH

  • Aside from the yellow exclamation mark, what's it say under "Device Status" for that device (when it's not functioning)? Does it act the same way when you plug it into another computer with Windows 7? Sep 30, 2013 at 19:36
  • This problem was never solved. I had to reinstall my entire system to fix it
    – nixda
    May 26, 2014 at 19:39

4 Answers 4


Q1: Why doesn't Windows recognize my device even when it already has a proper driver? And how can I fix this?

A Code 37 error basically means that the driver installed for the hardware device has failed in some way.

If you used phone with your PC before, try to rollback drivers. If you didn't or it doesn't help, update driver. Is there a driver from phone manufacturer(on CD, online)? These drivers are often better than Microsoft's. Run sfc /scannow in command prompt as administrator. It repairs system files. Deleteing the UpperFilters and LowerFilters registry values might also help.

Resource : How To Fix Code 37 Errors


You can stop this error(\Driver\WUDFRd failed to load) by changing the Windows Driver Foundation - User-mode Driver Framework service to Automatic. Type Services into the start search box Go down the list to Windows Driver Foundation - User-mode Driver Framework
Double click on it and change startup type to Automatic.


The following boot-start or system-start driver(s) did not load: wayuia

It looks like a virus: http://forum.avast.com/index.php?topic=114255.0

Q2: Can I somehow assure that those driver INF files showed in the Gif below are only for my portable device and save to remove? Or are those default Windows driver files?

They are Windows drivers, so don't delete them.

Q3: How can I do a fresh driver install so the MS drivers will be used? (Remember, no checkbox while uninstalling!)


You already have MS drivers.

  • I looked and there are no UpperFilters and LowerFilters registry values. I found them on other drivers so I'm sure I looked right. I tried to uninstall/reinstall all Universal Serial Bus controllers which is pretty hard without a PS/2 keyboard or mouse since you cut off your own tree branch :) But it didn't help either
    – nixda
    Oct 6, 2013 at 20:43
  • I posted two more solutions so check if they work.
    – srka
    Oct 7, 2013 at 10:19

It would help if you gave us the details of the driver that's working and the one that isn't.

You should first fully patch Windows, including any optional Windows Updates that look as though they might pertain.

If the problem persists, and since you have one PC with a working driver, you could transfer this working driver to the non-working PC, as detailed below.

Download and install the free Driver Magician Lite on the computer with the working driver, locate your driver and backup it up. This is normally written as a folder.

Copy this folder to the problematic machine, go into Device Manager, right-click on the device, choose Update your driver, then Browse my computer, finally point to the driver folder and it should automatically locate the driver's file. Install and reboot.

Sometimes Driver Magician Lite creates a non-complete backup of the driver. Let me know if this happens to you and what is the error message.

There are also several products for automatically finding drivers. Not all are useful and some are even malware, so ask for our recommendations first if you wish to go this way.

More advice :

  • Question: Do the 2 PCs have the same Windows version?
    – harrymc
    Oct 5, 2013 at 10:43
  • Yes, it was the same installation CD
    – nixda
    Oct 6, 2013 at 17:28
  • Then copying the driver should have worked. Do you have any interesting error message in the Event Viewer (same time as code 37 error)? Also, have you tried other usb ports?
    – harrymc
    Oct 6, 2013 at 18:20
  • I cleared my event log, rebooted to get new errors and uploaded all warnings/errors etc for you. The screenshot in the zip shows one warning regarding my issue
    – nixda
    Oct 6, 2013 at 19:59
  • PCs are not identical (PC vs. laptop). AutoPlay is off on both. Will test the other suggestions soon
    – nixda
    Oct 8, 2013 at 7:02

So it is recognized and working, and the problem appears on reboot. This is kind of a long shot, but is there a BIOS update available for your system?

  • A have this problem for half a year now. In this period three BIOS versions came out and were installed.
    – nixda
    Oct 10, 2013 at 6:31
  • Ok. I had some vague idea this had to do with power modes and thus suggested the BIOS fix. I should probably first have asked if this was working for a period originally or if it has been like this always. Currently I am assuming it was working originally. My remaining thoughts: 1) the sfc /scannow command to verify system file integrity mentioned before, I hope you tried it - you didn't post back on that. 2) After getting rid of the warning, strip msconfig, clean boot and see if the device stays - in that case some software is interfering.
    – mxl_
    Oct 10, 2013 at 13:45


I had similar issue. This post is about how I solved it myself. the solution does depend on the platform / Device details though.

My OS : Win 7 My Phone : Samsung Galaxy Core.

Issue : The phone(i.e Its memory card) stopped getting detected Symptoms : Portable Devices under Device manager shows Yellow Exclamation mark ! with an error Code 37

What I did recently on my notebook which I think could have caused the issue ; I used a PC cleaner software which did brilliant job in Cleaning the junk..freed a lot of space from my C:/ ---up t0 8 GB. Improved boot up time etc. But it came with a price...2 major issues. 1> My browser started taking forever to load and 2> My phone stopped getting detected.

Troubleshooting steps: 1> First off I UN-installled the Cleaner s/w. 2> Re stared the notebook -----> Still the issue was not solved. As the drivers were not working even if they were present in the machine. that's what error code 37 stands for. 3> Tried un install and re install of the drivers ... But the system told me that I already have the best drivers available. The ugly yellow mark still stayed there. 4>Did a bit of research and realized that there is another way to getting this thing to work. Every phone manufacturers (Well Most) come with a small client software which is used to managed the data/music and video and helps transfer of data to and from the phone.

For Samsung its called "Samsung Kies". The best thing about this software is...even if you dont want to use them for data transfer , it helps to re-establish the connectivity.

5> I just did Re-install drivers on Kies -- It asked for confirmation --I said Yes. It asked to remove the USB cable untill it is finished. It does that in 3 steps : 1. It installs the USB drivers 2 MTP drivers 3 something called ACD (dont know what that is) (Note that this is specific to Samsung phones)

10 mins later it finished doing it. I think it installed the same drivers from the PC but this time they work. 10 mins Later I connected the phone. It asked me to keep my phone in MTP mode... and I got connected. If I keep the phone in normal "Camera" Mode . I can see all my folders in my phone under My computer. I could see the memory card. And the Yellow exclamation mark disappeared and now it shows GT-I8262 (my phone model)

So to summarize if your phone copmany provides similar software like Samsung provides Kies. I am pretty sure it should have the similar options and it might just work for you too.

All the Best !!

  • Not ACB, you probably mean ADB drivers which is common nowadays
    – nixda
    Jan 7, 2015 at 9:10

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.