Per the title, this is the extent of my problem. When booting this system, there is no output on the screen (or even a signal - the monitor goes to sleep) until Windows comes up and shows me the login screen. Aside from this annoying BIOS/UEFI issue, the computer works normally.

If I connect a monitor via HDMI instead of DisplayPort, then I'm able to see the BIOS/UEFI as expected, boot messages, and so forth. However, due to my workstation setup (HDMI on my monitor is connected to another system), I want to stay on DisplayPort if at all possible

Further, apparently randomly, a 1 long, 3 short beep code is generated on cold boots, which indicates inability to detect the GPU. (This beep does not happen every cold boot, and happens roughly 60% of the time)

However, even on boots where this beep code happens, eventually Windows starts, displays the login screen, and the computer works otherwise normally.

This problem started when I upgraded from a GTX970 to a GTX1070. The 970 did not have this problem, the 1070 and 2080 did.

System Specs

• ASUS Maximus IX Hero (BIOS version 1301, 3/14/2018)
• I7-7700K @ 4.2GHz
• 32 GB RAM
• GeForce RTX 2080 SUPER (previously a GeForce 1070, and before that a 970)
• Windows 10 Pro

What I have tried

• Setting the Compatibility Support Module to Auto/Enabled/Disabled (source, fixed the problem for someone else)
• Setting PEG as the primary display device in the UEFI/BIOS.
• Installing Windows 10 in UEFI mode (by installing with the CSM set to enabled or auto)
• Disconnecting all devices from the computer aside from the keyboard and display
• An entirely new GPU (Twice!)
• Another DisplayPort monitor
• Another DisplayPort cable
• Modifying the deep sleep, OD, and refresh rate overclock on the monitor.
• Every combination of the above three items
• Upgrading the GPU firmware on the 1070 (source, references "blank screens on boot until the OS loads")

How do I get the BIOS/UEFI output to show up on my one and only monitor?

8

5 Answers

I could not enter BIOS. Win 10, ALIENWARE R9 w/ RTX2080 super, ACER XV273K monitor. My monitor OSD "source" was set to "DP1." I have 2 DP cables installed (DP1 & DP2). This computer also had problems waking from sleep. The solution: Set "source" to "auto." Both problems went away.

The down side of this: booting takes a few seconds longer due to the monitor running through all the source options. Cost/benefit is still a plus.

1

You still have the issue ?

Just purchased a new monitor and was faced with the exact same issue (Gigabyte G32qc) My new monitor as a option DP 1.3 (120hrtz only) or DP 1.4 (165hrtz+) DP 1.3 was fine getting into bios DP 1.4 get the issue no display whilst booting until it gets to windows

This pointed me to my VGA card 2080ti. It's basically a simple DP flash on the VGA card..

You need - NVIDIA_DisplayPort_Firmware_Updater_1.0-x64.exe 100% fix .... PsYmON

2

This is a problem of a monitor -- it is common when using Display Port to sometimes not turn on from sleep on powering on (me once in 10-20 boots), at least before the GOP driver takes control. With HDMI (with HDMI CEC at least) it is a less common issue as it is tested as part of standard compliance. To get into bios you can/should use "modern" technology -- press shift while rebooting and then press "reboot to UEFI" settings in Windows bootloader. That is the way nowadays, with Fast Boot activated (so you cannot get in BIOS settings on boot), because of two issues:

1. Security
2. You do not want to initialize USB + Keyboard UEFI capsule drivers and wait precious milliseconds to then initalize Windows drivers. Considering my OS boots in 7 seconds -- it is an important part of this.

4

I reinstalled my vbios drivers with only my dp port plugged in and it solved the problem. Worked after I rebooted it twice.

Asus Apex VII Motherboard , with a dell rtx 3080 in it.

I fixed this issue by disabling CMS in BIOS. Board: Gigabyte A520i. CPU: 5600G GPU: 5600G. I use graphic output of the APU.

1

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