Sony LCD & Dell XPS HDMI connectivity problem

[ondemandemails]

dear frnds,

i m having a sony LCD TV KLV-26S550A as well as a dell xps laptop with this config :
17.3" screen
windows 7 Ultimate
Nvidia GT435 Card with 1 GB ram
4 GB 1333 MHz RAM


when i m trying to connect the HDMI o/p of lappi to sony TV, TV says unsupported signal. when i connected same cord with desktop, the LCD runs fine:means HDMI cable is fine. now when i connected my lappi to samsung LCD using same HDMI port & cabel it run fine.

so whts the problem in connecting dell lappi to sony only. as all other sets are working fine.

any remedy to apply.

bye

 

[Maguscreed]

Unsupported signal is usually tv code for 'I don't know this resolution' have you tried changing the resolution before hooking it up?

 

[ondemandemails]

yep,

i tried starting with 800x600 & gradually increasing the resolution but of no use. along with this when i tries the same lappi & cable on samsung 32", it worked fine.

bye