windows 8 - HDMI and a cracked screen
2014-07
cortney
So recently my laptop screen was broken pretty badly, and the entire screen is covered in white and black spots and lines, so it's impossible for me to see anything. So for the past few days, I've been hooking it up to a second screen via HDMI, which was working fine, until my computer crashed. So now, with no hard drive enabled, my computer wont boot up all the way. And of course, my computer didn't send images to the second screen until after booting up. so obviously I cant fix it without seeing anything, but I can't see anything without fixing it. Is there anyway to connect to a second screen before my computer boots up? I've tried the FN+ F4 keys, along with FN + F5 but nothings working. My Laptop is a windows 8, HP Altec. A6 Vision
Luno
Try connecting an external keyboard/mouse via USB and booting the computer with the lid closed. This will often make a computer act like it's connected to a dock, forcing the external monitor to be the primary display.
Mikael
I have an ATI Radeon HD 5700 graphics adapter which I am trying to connect to a TV and a monitor.
With only the monitor connected everything works fine, however as soon as I plug in the HDMI cable going to the TV the screen begin to flicker.
I have updated the system bios and the graphics driver and the problem remain.
The screen flickers during POST and in boot up menus when the cable is connected so the issue doesn't seem related to the os (win xp) or my drivers.
The flicker may remain even after detaching the hdmi cable and require me to disconnect the computer from the mains to get it working normally again.
When connecting my laptop using the same cable to the tv in question, the laptops display does not flicker. So the tv and the cable should also be ok.
Can anyone shed some light on this issue, is it a broken gfx adapter or can it be something else?
Mr_CryptoPrime
I would have to guess that it is a hardware problem or technical software setting? Do you have a VGA cable because you could try that and see if that works? It will give you slightly less quality if you are trying to play blurays or something however. You should also try checking the refresh rates. If it is too high or low it may be causing the flickering. You should be able to experiment with this by right clicking the desktop and going to 'graphic properties'. There are also a lot of other settings in this panel that you can try playing around with. Check the specs of the TV to make sure you our outputting the correct refresh rate. If you make any headway, then post here again and I will see if that helps me any in diagnosing your problem. Best of luck!
s1r
The issue here is most likely that the basic speed on core and memory (157/300) does not provide enough power for the hdmi output.
Dirty FIX: put something else playing on desktop meanwhile, so the gpu automatically up's the core and memory speeds higher.
If you find better solution - please, let me know.
PS. Ofcourse you can always reprogram the GPU Bios, but that seems a bit harsh move for dealing with an issue such as this.
It's the infamous "desktop clock speed" problem all over again.