Hello I bought a irulu tablet... It came with a USB keyboard .the problem I have is that like when I press letters like M I get a , and when I press A I get a Q the W a Z B does nothing Much nothing I bought another USB keyboard but it does the samething.. also tried my sons and still... So I thought the problem was the tablet so I returned it and got a replacement still has the same issue ..can anyone please help me resolve this issue thank you