Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.

[Q]: Great charger!
[A]: Positive Review

[Q]: The memory was shipped as promised and installed in 30 seconds. It worked perfectly the first time I fired up the computer after installation.
[A]: Positive Review

[Q]: PC did not recognize the battery when inserted. The battery fit but the system did not sense that the battery was installed. The battery number was identical to what the HP spec called for. If I reinstall the old battery the system finds it but indicates that is dead and unchargeable.
[A]:
Negative Review