You would be shocked how often a bad cable is the culprit - but even the most sophisticated technical people overlook this basic obvious tech 101 - here is an edit from someone with a problem just a few days ago "***2nd EDIT: I decided to employ a VERY hi-tech solution (read: sarcasm)...I just plugged another USB cable in [...] Grin Cheesy Guess what? Worked" ... yet people self-admit sarcasm when they do it after wasting countless hours of their own time and other people's time - simply because they didn't troubleshoot the basics first ...

So what is troubleshooting tip #1? Check your cables - even if you think they are ok, swap them out with a cable you know is good ... if you are getting a "solid red light" - guess what, we expect you to do the basics and when you ask a question - provide useful information ...  or most of us will be too polite to tell you that your question lacked any useful information and was "NO HELP AT ALL" ... so who was no help at all?

What is troubleshooting tip #2? Provide detail about what you have tried, done, are observing at each step - someone else will catch the "been there done that" captain obvious thing that is usually occurring - but you will have asked a useful question with useful information rather than being the "no help at all" person ending up in the wrong forum ... and when you provide useful information, there are a lot of people who enjoy helping troubleshoot - and you will get useful helpful replies - rather than offers to purchase you rig ...