How to Fix LED Strip? Only flashes once, when usb plugged in?

My usb led strip worked for a few months, and now it wont turn on. It will only flash once, each time I plug the usb in. If i touch the end of the led

My usb led strip worked for a few months, and now it won't turn on. It will only flash once, each time I plug the usb in. If i touch the end of the led strip with my finger, the lights will stay on but barely visible.

How do I fix it?

or:My usb led strip worked for a few months, and now it won't turn on. It will only flash once, each time I plug the usb in. If i touch the end of the led strip with my finger, the lights will stay on but barely visible.How do I fix it?

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