Hi, Waion.
If it is like new and never carried, the driver should be fine. I'm wondering if it may just be a simple mechanical issue such as a lack of contact somewhere. Does it have a Kroll switch that might be malfunctioning? Do you have a multimeter? If so, start by checking parts of the light for continuity, and also do an amperage test with the tailcap/or kroll removed, and touch one lead to battery negative, and the other lead to the threads inside where the tailcap would be.
Also try disassembling the light, and put it back together to see if that improves any contact areas.
If the light works, and you have a faulty kroll, I'll send you one free.