Is it safe to disable Intel HD Graphics?

My recently bought laptop had 8GB of Ram as referred in his box, it actually has 8GB installed, but only 6GB are usable because Intel HD Graphics took some of it, If I disable the Intel HD Graphics will my PC get back his 2GB stolen by the integrated graphics? Is it totally safe to disable it (of course i have a dedicated graphic card), will it affect the laptop warranty?
Thanks for your help.

 

Depends on the notebook (what model do you have?).

Warranty is not an issue for user adjustable settings (ever).

Look in the BIOS and see if you can set the igpu graphics memory to 64MB/128MB (or 'minimal') too.

 

If your laptop support it (such as you can disable the intel gpu within the BIOS of the laptop) rather than that I will not recommend you to disable the intel gpu.
If you still want to go with it then dont worry about the warranty as its software not hardware problem AFAIK.

 

The majority of hybrid graphics systems sold today utilise the iGPU for output, so it's impossible to disable it (if you do, the laptop screen goes blank). Some high-end gaming systems do come with hardware mux devices that allow you get rid of one GPU while feeding the data from the other. It would be helpful to know which laptop you're using.

 

Also if it has no discrete gpu it won't be able to display anything.

 

My laptop is this one: Toshiba Satellite C55-C-1GW
I have the Nvidia Control Panel defined to use both graphics for a better consumption of energy, but I can set it to use only the Nvidia graphics, is it going to prevent my screen to go blank when I disable the integrated graphics?
And how can I access the BIOS, if it is even in possible with my laptop?

 

You should not disable Intel GPU through Windows control panel, your system will go blank. It is the only output to the LCD.

You can set Nvidia GPU to be used all the time through the Nvidia Control Panel, but I don't know why you would. Nvidia will just pump it's graphics out through your Intel GPU to the LCD. It will consume more power and generate more heat.

To get into BIOS with Toshiba you usually repeatedly press F2 key when the computer boots up. Or through charms bar settings/Change PC Settings/Update and Recovery/Recovery/Advanced Startup/Restart Now and you will get some options and you can enter the system BIOS that way.

 

I highly doubt your laptop has the hardware MUX, at this point, those are only found in few laptops. Most laptop just use the video card to do the video processing and then pass it through the IGP to the display. Essentially, that means that it can't be disabled or you'll get a completely blank display since the video output. Your only hope is to have the option to change the amount of RAM allocated to the IGP in the BIOS, if that isn't there, you are pretty much SOL.

 

I can't find it on the BIOS, I've searched it but I didn't see anything o

I can't find it on the BIOS, I want to keep the Intel Graphics but I want to change the amount of ram allocated to it, but I cant even find the way to change it.

 

The option may simply not be present, not all laptop BIOS have options available. If I were to take a guess, either the option is buried somewhere, you have a few presets such as minimal/medium/max or the option is simply not there. I'm going to go on a limb and bet that Toshiba used an AMI BIOS and locked most of the configuration settings so they can't be changed.

I kinda get what you're going for, my XPS 15 which has more RAM has a whopping 148 MB hardware reserved which includes not just the IGP compared to the massive 2 GB that your Toshiba is eating.