Windows 10: why am I missing almost 1800 gigabytes?

hi, I have a 2 terabyte computer and it is only letting me have 222 gigabytes. when I go to system and go to storage it says I have used all my space, displaying i only have 222 gigabytes while I should have almost 10x that. it is not a visual glitch as it is full and wont let me download anything else, please help I do not know what is going on...please note I am not very tech savvy, have had a virus and spent $900 to get it fixed, and have no idea what going.other info/ system info: alienware aroura r10, 2-3 years old, used heavily and for gaming.please help, I am a confused 12 year old that

:)

 

Why did the startup window get cleared?

I didn't missed any step, the list was gone and gone , even after using lot of programs the programs were not listed in that list.

 

gigabyte Z370 HD3 + Samsung EVO 970 won't install Windows 10

Newly assembled system:

• Gigabyte Z370 HD3 V1.0 motherboard
  
• Intel i7-8700 CPU
  
• 2x DDR4-3200 16GB RAM (F4-3200C16D-32GVK)
  
• Samsung EVO 970 500 GB M.2 SSD (MZ-V6E500)
  
• Thermaltake TR2 S 500 W PSU (TRS-0500P-2)
  
• Deepcool Tesseract case (seems doesn't matter)
  

All components come new, unpacked.

Windows 10 Pro installation failed at the step "Getting files ready for installation." when about 70-80% complete.

I used both the original Windows 10 Pro DVD and a USB stick prepared by a Microsoft tool; the result is the same.

I tried to use the pre-installation SATA driver from the Gigabyte website.
Once I installed this driver at the step "Where do you want to install Windows", my M2 drive had disappeared from the list.

The same situation repeated with another set of components.

By the way, when I try the same set of components but with an ASUS Z370-P motherboard, there is no problem with Windows 10 installation.

I still need to assemble some systems with Gigabyte motherboards.

Update: It was easy to install Windows 10 on the SATA SSD. Same conditions: Gigabyte motherboard, but SATA SSD instead of M2 SSD.

Any suggestion what to do in order to install Window properly?

 

Gigabyte 990FXA-UD3 (Realtek) - No bass/sub-woofer

• Speaker Setup plays all speakers fine
• Applications do not play any bass through subwoofer (or really, at all)
• Custom built PC using Gigabyte 990FXA-UD3 motherboard onboard audio.
• Windows 10 fresh install
• Tried latest driver from Gigabyte, Realtek, and Microsoft
• Windows "default" driver does play bass through sub-woofer, but audio stutters and is quiet.

Not sure what else is relevant to mention; I've tried following various posts with suggestions to fix this, with no success. I've been at this for quite a few hours and am very frustrated.

Please let me know if you have any questions, or suggestions on how to resolve