Try it in your pc, if it doesn't work there it probably died on ya. I have a couple in a drawer that do not work- one never worked and the other worked a short time. Manufacturing quality has taken a hit and lead free solder makes it worse IMHO
I switched to PEX so don't need to worry about that. Wish they'd put the lead back into electronics solder or find a better solution. Tired of sliding processors and resistors every time things get hot...