Dv4-1257tx TV reception problem

i live in india, i recently purchased one hp laptop ,model no. dv4-1257tx with an integrated hybrid tv tuner.
mediasmart is able to detect the TV signal from my cable ..but the video reception is terrible, it flickers and flickers and flickers..it is never stable.but the same cable connection gives excelent quality on my TV.I am not using any set top box !!
i have tried almost everthing like reduced my  screen sresolution , downloaded update for mediasmart tv software from hp site but of no avail.
Do i need to install some xtra drivers.if yes then pls suggest me..suggest any soln u know ..this forum is my last hope

thanks for ur reply..
i think the cable connection is ok as the video quality is pretty gud when watched on TV
I have now downloaded the latest drivers as suggested by you from hp site..but still it hast inmproved
its an integrated hybrid tv tuner..from aver media. i am a beginner in this field,if u can suggest me something more, it will be really gr8
Thanks

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