https://devzone.nordicsemi.com/f/nordic-q-a/23315/nrf52840-crashes-after-connecting-usbI&#39;m trying to implement usb function on the nrf52840. The moment that I connect the usb to the computer the chip resets. With gdb debugger i found out where the fault happens. It happens if he jumps back in the file core_cm4.h on line 1629. theen-USTelligent Community 13Sat, 22 Jul 2017 13:51:01 GMThttps://devzone.nordicsemi.com/thread/91660?ContentTypeID=1Sat, 22 Jul 2017 13:51:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:57cc412d-a64b-49b1-983b-0bd73328e714ilia<p>Hi, Steven. I was trying to build several examples from SDK (usb hid, usb cdc) and I have got the same errors. I have also tried to flash precompiled hex from the SDK, but my PC couldn&#39;t recognize usb device. I am new to Nordic devices, so I have next questions. How can I change the start up file? Where it is supposed to be?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/91659?ContentTypeID=1Thu, 06 Jul 2017 19:48:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:92bde8a4-d66d-48c4-929b-8f155f5ae677stevenB<p>Added the wrong start up file (from an older chip) so the vector table was incorrect. When the interrupt occurt it got to the wrong vector -&gt; so the processor crasht</p><div style="clear:both;"></div>