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I have successfully downloaded the HMI program into NB7W-TW00B, but there is no display on the HMI because the communication indicator which is connected by the RS232 cable doesn't light up. I have verified the wiring and pinout of the RS232 communication cable. What else can be done to troubleshoot this issue?

Hi. I'm running a Windows 7, 64-bit machine. I have NB Designer 1.4 installed. when I plug in the nb7w-tw00b, it shows up as "MTP USB device", and that the driver install failed. so I opened Device manager and find the item, I right-click "MTP USB device", and "update drivers". I click "Browse for my drivers" and navigate to "C:\programfiles (x86)\omron\nb-designer\driver". I check "Include subfolders". then click next. it does not find the drivers. says "MTP drivers are the best" So I try again: right click the "MTP USB device" but this time I click "browse for drivers", then "Let me pick from my device drivers...". i navigate to C:\programfiles (x86)\omron\nb-designer\driver. I select the bulksub.INF file, and i get this error: "The folder you specified doesn't contain a compatible software driver for your device. If the folder contains a driver, make sure it is designed to work with WIndows for x64-based systems" NOTE: I just tried this on a Windows 7 32bit machine. same problem. Except the message says "Make sure it is designed to work with Windows for x32-based systems" Any thoughts to get this to work?