This article is for Mac only, to select a different operating system, click HERE.   These utilities are used by technical support to diagnose a wide variety of issues. If you have been directed here by technical support, select and follow the instructions for your specific operating system below, then reply with the resulting saved file as requested:
    System Information / System Report (macOS)

1) Click the Apple icon at the top left of your screen
2) Click "About This Mac"
 
3) Click "More Info" (On OSX 10.7 and later, you will then need to click "System Report" as well)  
4) When the System Profiler utility opens, go to File > Save
 
5) Save the file to your desktop, DO NOT change the format to RTF.