After reading through the forum regarding no sound output through laptops to tv,s I have experianced this with my Dell Studio 1531 laptop and having tried updating all the drivers required to no avail I found a fix. Connect laptop to tv with hdmi lead select the the hdmi input on the tv and finally switch the laptop on and when it boots up I had sound through the tv speakers and the hdmi option was available in the sounds menu on the laptop. So when I connect up to my tv I leave the laptop as the last thing to switch on and it works everytime.
System Manufacturer/Model Number HP Pavilion dm3 (netbook) *** 27" iMac (Dual-Boot) OS Windows 7 Home Premium (64-bit) *** Windows XP SP3 (32-bit), OSX 10.6 CPU AMD Athlon Neo X2 1.6GHz *** Intel Core i7 Quad Core 2.8GHz Memory 4.00 GB *** 4.00 GB Graphics Card ATI Radeon HD 3200, 384MB *** ATI Radeon HD 4850, 1GB Sound Card ATI High Definition Audio *** ATI High Definition Audio Monitor(s) Displays LG Flatron W2053TX Screen Resolution 1600 x 900 (monitor), 1266 x 768 (laptop) *** 2560 x 1440
Mouse Logitech Cordless Optical Mouse for Notebooks Hard Drives 300 GB SATA (internal), 500 GB HP SimpleSave (external) *** 1 TB SATA (internal), 160 GB LaCie (external) Internet Speed Broadband