Windows 10: I can only see the post / bios screen when booting on my DP monitor if I have CSM support...

Discus and support I can only see the post / bios screen when booting on my DP monitor if I have CSM support... in Windows 10 Ask Insider to solve the problem; I recently reset my bios and wiped my drives to start fresh. Ever since I did this I can only see the post/bios screen on my hdmi connection if nothing... Discussion in 'Windows 10 Ask Insider' started by /u/lwvfx, Sep 27, 2020.

  1. /U/LWVFX
    /u/lwvfx Win User

    I can only see the post / bios screen when booting on my DP monitor if I have CSM support...


    I recently reset my bios and wiped my drives to start fresh. Ever since I did this I can only see the post/bios screen on my hdmi connection if nothing else is plugged in! CSM enabled will allow it to appear on the DisplayPort connection.

    Weird!

    submitted by /u/lwvfx
    [link] [comments]

    :)
     
    /u/lwvfx, Sep 27, 2020
    #1
  2. MRBLACK761
    Mrblack761 Win User

    PC wont boot up (No POST, No Video)

    I recently installed a new Asus M5A99X Evo r2.0. The motherboard green LED lights up and the case and cpu fans spin. But there is no video when its hooked up to my monitor.

    Steps that i have tried:
    "No POST", "system won't boot", and "no video output" troubleshooting checklist

    Made sure all connections are properly connected.

    Flashing the CMOS

    Tested the PSU

    Followed all steps in the user manual

    If there are any links that you guys can point me to or suggestions that could help it would be highly appreciated. Thank you
     
    Mrblack761, Sep 27, 2020
    #2
  3. POPCORNMACHINE
    PopcornMachine Win User
    No BIOS screen on boot

    Situation:

    Have recently redone water cooling loop. System has been running fine for the last 5 days. This morning I was trying to tidy up cabling and then booted it again to make sure it still worked and everything was connected.

    The login prompt was on the screen, but I didn't have the keyboard there yet. About 15 minutes later I came back with keyboard and mouse from my other computer and it was off. Then I realized that the fan for the NB/IOH was not plugged in, and that it most likely was the reason it had turned off. Although I have not had a fan there longer than that, it does go up to 90C or more without one after a while.

    Now each power on results in a fans an pump starting an leds on the MB, followed a power off and restart with no video on monitor at all. Can't get it to do anything else.

    Steps tried already:

    Reset BIOS by setting jumpers.
    Reset BIOS by removing battery.
    Remvoed ram and left one stick in.
    Tried one stick of alternate ram.
    Checked PSU with tester.

    PSU looks ok and nothing else gets it past the blank screen. Always restarts again after I power it on.

    Thanks for any suggestions.
     
    PopcornMachine, Sep 27, 2020
    #3
  4. WILSONNWT
    WilsonNWT Win User

    I can only see the post / bios screen when booting on my DP monitor if I have CSM support...

    Dual Monitor issue

    Thanks Junaid for your prompt reply. Do you mean that changing the cable (DP port to DP port becomes DP port to HDMI port) can fix the problem? DP port connects to onboard display DP port and HDMI port connects to monitor's HDMI port.

    Regards,

    Wilson
     
    WilsonNWT, Sep 27, 2020
    #4
Thema:

I can only see the post / bios screen when booting on my DP monitor if I have CSM support...

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