In different USB ports and in the USB ports of my TV.
The stick is working except the blue LED. I have no problems with reading or writing but I don’t know wether the process is ready or not. When I take off the USB too early, I lose data. I already made this experience. :O(
In the hardware manager it is known correctly.
I also have a 64 GB stick. Both are identical in construction. The 64 GB works correctly.
I also have 128 GB and 8 GB. They also work properly. (All SanDisk)
On my PC I have USB 2.0 ports but that should not be the problem.
Interesting. It could indeed be the USB 2.0 ports and I’ll bet the TV has a 2.0 port also. See if you can find a neighbor or relative that can stop by that has a pc with a 3.0 port and try it in their pc and see if the light works. If so it’s definitely a USB 3.0 situation. If not its a SanDisk problem. And it’s a free replacement if that’s the case.
It’s possible a contact between the USB plug and USB port are oxidized or dusty. I have a USB port on the back of my desktop pc that gets erratic after a year or so. I’ve found cleaning it, ever so gently, with emory paper restores it to working condition. Maybe, may be, something similar is your problem. Maybe plugging/unplugging the new USB drive into a port a few dozen times will help clear any oxidation problem on your drive.