# EM9190 No AT port, Win10 USB Drivers BSOD **URL:** \ **Category:** MC/EM Series\ **Tags:** driver\ **Created:** [November 4, 2024, 4:53pm UTC](https://forum.sierrawireless.com/t/em9190-no-at-port-win10-usb-drivers-bsod/33945 "2024-11-04T16:53:09Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![AGoodUserName](https://avatars.discourse-cdn.com/v4/letter/a/ea5d25/32.png) [@AGoodUserName](https://forum.sierrawireless.com/u/AGoodUserName)\ **Post date:** [November 4, 2024, 4:53pm UTC](https://forum.sierrawireless.com/t/em9190-no-at-port-win10-usb-drivers-bsod/33945/1 "2024-11-04T16:53:10Z")
We have recently received new Getac tablets that feature EM9190 modules in them. With the drivers from the manufacturer’s website we can get the cellular to at least work but I do not have a port for AT commands. The USB driver from Sierra Wireless directly BSOD’s the tablet immediately with a verifier dma violation BSOD. I’m not too familiar with Sierra Wireless devices but I am very confused as what to do here. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [November 4, 2024, 5:18pm UTC](https://forum.sierrawireless.com/t/em9190-no-at-port-win10-usb-drivers-bsod/33945/2 "2024-11-04T17:18:49Z")
what do you see in device manager now? ---
**Author:** ![AGoodUserName](https://avatars.discourse-cdn.com/v4/letter/a/ea5d25/32.png) [@AGoodUserName](https://forum.sierrawireless.com/u/AGoodUserName)\ **Post date:** [November 4, 2024, 5:25pm UTC](https://forum.sierrawireless.com/t/em9190-no-at-port-win10-usb-drivers-bsod/33945/3 "2024-11-04T17:25:25Z")
Just the network adapter. There is no modem listed in device manager as expected. Other than that, just the NMEA COM port. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [November 4, 2024, 5:44pm UTC](https://forum.sierrawireless.com/t/em9190-no-at-port-win10-usb-drivers-bsod/33945/4 "2024-11-04T17:44:42Z")
Did you check with getac? I don’t see problem to install the driver on win10 Btw, does this help? > **[How can I fix a Windows problem called a driver verifier DMA violation?](https://www.quora.com/How-can-I-fix-a-Windows-problem-called-a-driver-verifier-DMA-violation)** > > Answer: I had this problem, but did finally fix it. This DMA “stop code” would not allow me to reset my PC, and every tweak to the devices, settings or services was either blocked by the violation or simply had no effect. In my case, what did... Lastly, you can also have a look here > [@Using Private LTE with EM9191](https://forum.sierrawireless.com/t/using-private-lte-with-em9191/30742/12): > > not sure if this works, you can have a try: download the USB driver of Windows: [https://source.sierrawireless.com/resources/airprime/software/sdx55-windows-drivers-latest-release/#sthash.t4StrCJv.dpbs](https://source.sierrawireless.com/resources/airprime/software/sdx55-windows-drivers-latest-release/#sthash.t4StrCJv.dpbs) create a configuration.ini file in the same folder as the driver, add the following setting in configuration.ini [Default Values] USBCOMP=9 run the driver exe. connect the EM9 to windows again ---
**Author:** ![AGoodUserName](https://avatars.discourse-cdn.com/v4/letter/a/ea5d25/32.png) [@AGoodUserName](https://forum.sierrawireless.com/u/AGoodUserName)\ **Post date:** [November 4, 2024, 6:24pm UTC](https://forum.sierrawireless.com/t/em9190-no-at-port-win10-usb-drivers-bsod/33945/5 "2024-11-04T18:24:09Z")
It seems like generating my own configuration.ini file has resolved the issue. I appreciate the assistance. ---
**Author:** ![AGoodUserName](https://avatars.discourse-cdn.com/v4/letter/a/ea5d25/32.png) [@AGoodUserName](https://forum.sierrawireless.com/u/AGoodUserName)\ **Post date:** [November 4, 2024, 7:08pm UTC](https://forum.sierrawireless.com/t/em9190-no-at-port-win10-usb-drivers-bsod/33945/6 "2024-11-04T19:08:09Z")
Spoke too soon, I guess. Lost the NMEA port and now have no GPS. USBCOMP is 8 in the configuration.ini. USBCOMP? shows GPSENABLE is 0x01 GPSTATUS? shows no fix. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [November 5, 2024, 1:12am UTC](https://forum.sierrawireless.com/t/em9190-no-at-port-win10-usb-drivers-bsod/33945/7 "2024-11-05T01:12:19Z")
you can try to modify configuration.ini, add “NMEAVSPDRIVER=1” and then run the driver exe. See if you can get the NNEA port again. e.g. * * * [Default Values] NMEAVSPDRIVER=1 * * * Please note that we must connect antenna to AUX antenna port, otherwise, no NMEA frame in NMEA virtual COM port. BTW, you also need to check AT!GPSSATINFO? to see if it can view any satellite.