This computer spekers quality very bad and noisy .i am used this time genration of computers volume and sound qulity very good .but in these sound quatity very bad and noisy.second think these have slow bettery backup .i am charging all night and start in morning this discharge in 2 hour and show him to bettry low.scrren resoltion very bad quality.i have no idea how to replace this bettery so I calll in service center then they says replace these in 1800 rs . so I am not setisfide to these service so not buy these pc.