Long Bình Computer pass all risks to buyers

Dear Vforum members

I bought a Lenovo X250 of Long Binh Computer at 22 million vnd 2days ago and today a key G was dropped out. I brought to Long Binh (Nguyen Cu Trinh) office and refuse their warrant obligation. They claim that I received a PC so I am responsible for all risk to computer. That's not fair to buyer like me. How can I detect every keys on the key board?

So what should I do to take back money or replace a key board?

I need your advice.

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