1. razor1973's Avatar
    Subject pretty much sums it up.

    I was on the previous (first?) Windows 10 Technical Preview build and just updated to the latest build 10041 via regular Windows Update and everything ran successfully, except the touch screen stopped working. I am guessing the drivers are bad. I can't slide up to log in, so I really can't do much. I read somewhere that you could use an OTG cable to plug a regular mouse to it and work that way in order to download the latest drivers from Dell (bios A10, for example, since I'm on A09 and didn't think of upgrading this first), but the mouse doesn't do anything either. Nothing moves.

    At this point, I am completely stuck and don't know what to do.

    Is there a way to install factory 8 or 8.1 via SD card? It's the only thing that comes to mind.
    03-21-2015 11:07 PM
  2. razor1973's Avatar
    _bUmp_BumP_bUMp_BuMp_
    03-23-2015 07:08 PM
  3. bigeduck's Avatar
    They changed the lock screen, it says hit the windows key + power key to log in on the screen. Not sure why the change, also if that fails you can bring up the recovery screen by ... holding down the volume rocker while booting? I forgot which but you can load the bios / boot screen that way.
    razor1973 likes this.
    03-24-2015 09:38 AM
  4. PepperdotNet's Avatar
    Connect a keyboard and use it to logon. Your touch screen will be functional after that.

    I found this out the hard way on my Surface Pro 3.
    razor1973 likes this.
    03-24-2015 10:29 AM
  5. razor1973's Avatar
    Connect a keyboard and use it to logon. Your touch screen will be functional after that.

    I found this out the hard way on my Surface Pro 3.
    I tried with a mouse and it wouldn't work at all. Nothing moves. I am not 100% sure I have the right cables, though. I bought these cables like 2 years ago that have a male mini USB on one side that goes in the charging port of the Venue and a female regular size USB on the other where the mouse plugs in. I read you need to use an OTG cable. Aren't all cables like the one I just described OTG (on the go) cables? Or do they need to have some special sauce inside?
    03-24-2015 07:17 PM
  6. razor1973's Avatar
    They changed the lock screen, it says hit the windows key + power key to log in on the screen. Not sure why the change, also if that fails you can bring up the recovery screen by ... holding down the volume rocker while booting? I forgot which but you can load the bios / boot screen that way.
    Pressing Windows + Power does nothing The logon screen doesn't slide up.

    I had tried that too. Volume Down takes you to the BIOS, where you can't do a whole lot to remediate my problem (or can you?). Volume Up takes you to the boot manager, which looks like this. I can't find a way to fix anything else from here. When I run diagnostics, they all succeed (including Tablet Panel). Setup simply takes you to the BIOS.

    Is there a way to reinstall WP81 from SD card or something like that that doesn't need to boot into WP10? That's when I lose the touch screen.
    Attached Thumbnails dellvenue8pro_bootscreen.jpg  
    03-24-2015 07:23 PM
  7. horseybob's Avatar
    I've got an HP Stream 7. Last build caused issues , so I got an IOGear OTG dongle with 3 USB ports, as well as SD and microSD slots, so I could connect my keyboard, mouse and USB recovery. Definite must have when playing with tech preview. Put all of your drivers on the USB as well
    03-24-2015 08:20 PM
  8. razor1973's Avatar
    So, unsure the cables I have that adapt mini USB to regular size USB were OTG (since I'm not sure whether that's some type of special cable), I purchased the one horseybob recommended and waited for it to arrive. It arrived today and, right away, I connected it to my Venue and a mouse to the cable. NOTHING. The mouse isn't even getting power from the Venue, since the light doesn't go on. Tried another mouse... same thing. Different USB port on the cable... nothing. The logon screen is there and I can't slide it up to type my password.

    WHAT AM I DOING WRONG? I don't know what to do to save my tablet, which is perfectly fine and only needs W10 touch display drvers/calibration or a way to reinstall W81 without needing the touch screen (SD?). :(
    Attached Thumbnails 61qfi8wjkml._sx522_.jpg  
    03-27-2015 11:46 PM
  9. NearDenver's Avatar
    I had same issue. The USB port is not powered so you need to use a powered USB hub. The keyboard will then get its power from hub.
    03-28-2015 12:07 AM
  10. razor1973's Avatar
    I had same issue. The USB port is not powered so you need to use a powered USB hub. The keyboard will then get its power from hub.
    Damnit! I lost $10, then. You mean like this one? 3 Port Micro USB Host OTG Hub Adapter Cable with Power for Samsung Note 3 4 S5 | eBay

    Attached Thumbnails _12.jpg  
    03-28-2015 09:56 AM
  11. NearDenver's Avatar
    That might work. It needs to power the connected device (keyboard) and this shows it charging the tablet.
    I just bought one at best buy.
    03-28-2015 01:47 PM
  12. razor1973's Avatar
    Purchased. Now waiting...
    03-28-2015 06:58 PM
  13. waazzupppp's Avatar
    I have to say that both my updates 10041 and 10049 have gone buttery smooth. No issues at all. The one thing I did have to do was reject the video driver update on 9928, but after that, I've had no issues.
    04-01-2015 02:59 PM
  14. bigeduck's Avatar
    So I was having issues with some apps not loading on the latest update and decided to do a refresh, .... yeah, that didn't work. Still had my recovery key from before, that didn't work either. Could load into win10 installation but same problem, not touch screen driver. Finally dug up an old powered usb hub from the back of my closest and was able to step through the setup with the on screen keyboard.

    Had to re-set up my user account as there was no wifi when setting it up. I suppose I could have slipstreamed it in the installation, but just loaded the drives off a usb stick afterwards.

    All this to say that yes, you can install a copy of windows from scratch with a usb hub and mouse / keyboard attached.
    04-02-2015 11:35 AM
  15. tarra3's Avatar
    I just did the latest update and now when I lock the screen I can't seem to unlock it. The backlight comes on but nothing else on the screen. I am forced to hold the power button down and force reset it. Anyone else see this or have a workaround?
    04-03-2015 02:48 PM
  16. NearDenver's Avatar
    Hopefully you got WiFi going as the update pushed out yesterday makes this a lot better.
    05-05-2015 08:29 PM

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