Debian Linux Installation. Semi-black screen window.
 

I have tried to install Debian 9.5 for 2 weeks now on my laptop. I want to dual-boot it along Windows 10 Pro. I got to the installation menu, and whenever I select an installation option, like graphical, console install, advanced install,etc., I am presented with a weird semi-black screen. The screen has a string of small sized installation menus, this fills the top section of my screen, meanwhile the rest of the screen is black. I suspect a driver problem, however I can't seem to figure it out. I'm rather new to GNU/Linux. Tried installing Ubuntu 18 and never had any issues, both live and when I get through the installation process. I also tried installing Debian 9.5 in an VM (virtual box) and didn't have any issues either. However, when I got to the testing version of Debian (Buster), there was a slight change, as the string of small sizde menus were a tad bigger. I also tried installing the non-free version of Debian 9.5, but I didn't have success. I also enabled hybrid graphics from BIOS. On the discrete it won't even show an installation menu (so most likely Nvidia related problems).

As installation medium, I used an USB stick. Burned Debian 9.5 using Rufus, and used GPT partition scheme, and FAT32 file system.

My laptop:
-Name: TUXEDO Book XC1708.
-Processor: Intel Core i7-8750.
-GPU: Nvidia GTX 1070.
-Storage: 2xNvme SSDs (970 Evo).

Thanks for all the help!

It's quite common with Optimus (hybrid graphics) laptops to have black screen problems unless KMS is disabled for the installation kernel. Usually this means appending nomodeset as soon as a boot menu appears, but a commonly suggested alternative is nouveau.modeset=0. Sometimes it helps to at the same time remove the splash=silent and/or quiet options. Other times it helps to disable Plymouth, by appending plymouth.enable=0. Also it may help to install an available BIOS update, or change gfx-related BIOS options.

Note that most of the time when sticking with FOSS, nomodeset or nouveau.modeset=0 must not be included on the installed bootloader cmdline, since all the mainstream FOSS video drivers for X depend on having KMS enabled (which is its default state). Proprietary drivers added post-installation, such as NVidia's, typically need KMS disabled.

Thanks mrmazda for your help.I apologize for my late response. I had to wait for the manufacturer to send me the latest bios. It was surprisingly easy to fix,I just downloaded the testing version (again) and appended “nomodeset” and “nosplash” when loading the kernel. Don’t know how I missed this on my previous trial...As a general advice,I would urge the reader to get the testing version(of Debian) if the hardware configuration has recent components, due to the fact that Debian simply struggles with the latest hardware. Thanks again!

All distros struggle with hardware newer than the distro's release date. :p

Note that splash not is the kernel's default. Thus:(the null string)