Graphical issues and inability to install windows 10.

[anton.e.olofsson]

Hi! I Recently upgraded my computer (replaced basically everything except chassis and hard drive). I previously had windows 7 but wanted to install windows 10 instead without keeping any old files. So I started up my new systems for the first time with my old hard drive connected and a windows 10 installation stick in my USB-port. The computer worked fin and the installation started. I choose to clean my old partition with my old windows 7 install. Unfortunately, the system didn't let me proceed since the disk was now MBR-partitioned and EFI systems can only be installed on GPT discs.

I thought googled a solution: Booting to UEFI Mode or legacy BIOS mode according to Microsoft's website. But when I restarted my computer the screen was all black. I think it did not recognize my graphics card. I removed it and started with the screen connected to the motherboards onboard graphics card instead. But the screen was covered in artifacts. Green and purple lines across the screen. When I try open bios setup or Boot to UEFI Mode or Windows Setup command prompt window, the screen goes all black! I can still start with the USB-stick to enter windows 10 install but i can't install and none of the systems restore options work now. What did I do when I cleard my old hard drive? How to fix this? Any help greatly appreciated!

My specs are:
Motherboard: MSI Z370-A PRO
Hard drive: Samsung 850-Series EVO 1TB
RAM: Corsair 16GB (2x8GB) DDR4 2666MHz CL16 Vengeance
Graphics: ASUS GeForce GTX 1070 8GB DUAL OC
Processor: Intel Core i7 8700 3.2 GHz 12MB
PSU: Corsair RM550x 550W

 

[Darkbreeze]

First, try removing the motherboard CMOS battery (With the unit turned off and the PSU unplugged from the wall) for a minute or so, then reinstall the battery, plug back in, connect your monitor cable to your graphics card and power up. If you are able to POST or enter BIOS, great.

If not, power off, move monitor cable back to motherboard output, REMOVE the graphics card from the motherboard, and try again to POST or enter BIOS.

If you are able with either method to obtain an on screen display, and enter the bios, then set the #1 boot device to your USB drive and follow the instructions here:

http://www.tomshardware.com/faq/id-3567655/clean-installation-windows.html