I've conntected it to my TV, and I've tried two different s-video cables.
The manual states that function+F4 will swap between displays, but the video driver doesn't seem to recognise that the TV is attached to the laptop. Fn+F4 only flashes the laptop display once and doesn't let me switch through the display options like it normally does when the laptop is hooked up to an external display through the DSUB output.
There is however, some kind of signal going to the TV as when it's on the AV input, even though the screen is still blue, it flickers when I wiggle the cable at the back of the laptop.
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I work at a company where we design a lot of boards that have HDMI interfaces on them. We have seen cases where there is no display and after swapping out the HDMI cable, the display comes on. HDMI signals can be very tricky in that the length of the cable or whether or not the cable has ferrites integrated into it can mean the difference between a blank screen or video displayed. Try at least one other cable type to see if the problem goes away.
The display properties indicate the hardware is working, so it's likely just a setting.
On HP/Compaq models you will see a picture, usually on the F4 key that looks like a screen with two lines beside it.
You need to hold down the Fn key(bottom left) and then push the F4 key at the same time to cycle between LCD, external or both.
If it is a newer model, a menu will pop up when you do this asking if you want to duplicate the LCD on the external, switch to the external or extend the desktop onto the external. Select the appropriate setting or continue holding down Fn while pressing F4 to cycle between the settings to the one you want.
If you have re-installed the computer at some point with anything other than the factory recovery set this may not work and I will have to give you a longer set of instructions.
If this works please rate this as fixed, if not reply back and indicate what version of windows you're using and I will post the instructions for the "long" way.
My Hp Compaq tc4400 Does not load Windows and when i try to install a new one and error Message apears saying that it cannot detect any hardrive, but when i press F9 for boot selection Notebook Hardrive is dected and availble, i tried removing the hardrive and re-insert it also it dint work could somebody help plssss