AsRock Z270 Taichi + 2060 || >2Gb Bar 4 Beep post code (memory?) <2Gb blackscreen no bios no post no OS

[mrbakunda2]

System

• Motherboard: AsRock z270 Taichi
• BIOS Version:P2.30
• GPU: Gigabyte RTX 2060 6GB - TU106-200A
• CSM is turned off. Make sure to confirm this in the BIOS and not with GPU-Z or similar since it can be inaccurate
• 4G decoding is enabled. Make sure to confirm this in the BIOS and not with GPU-Z or similar since it can be inaccurate
• UEFIPatch is applied (see Using UEFIPatch for more information). On some motherboards DSDT Patching is also needed
• I have read Common issues (and fixes)

Description

Have an AsRock Z270 Taichi, intel 6700k Skylake cpu and a Gigabyte RTX 2060, Followed all instructions and everything went "fine" (I have an AsRock board but according to the steps didnt need to do DSDT patch) up until choosing Bar sizes in NVstrapsRebar. Current bar is listed as being at 256MB and I set the PCI and GPU bar sizes to the same value each time, anything less than 2GB gives me a blackscreen and no bios, post or OS and I have to reset CMOS, anything over 2GB gives me a 4 beep post code which if I recall is a memory issue. I had originally tried 8gb/8gb because my GPU has 6GB VRam and there was an issue with Socket 1151LGA being less than 2GB causing issues and to set it to 4GB or higher. I'm a little brainscrambled at the moment and would appreciate any help.

Other info: when checking for DSDT patching Large memory for PCI Express Root Complex (which again I believe is basically PCI bus) gives me the below image which unless I'm just too tired to read properly is >FFFFFFFFF and therefore shouldn't need DSDT Patching.

I don't have my Cpu overclocked at the moment if that matters.

Edit: I was wrong: https://www.asrock.com/support/faq.asp?id=2

4 Beeps is a System timer failure.