Video Display Issue Installing Windows 10

Question

I have recently purchased a used Optiplex 3060 and went to install Windows 10 V21H2 (not the latest) from a USB I have used in the past, indeed 2 USB devices. On booting the USB the screen displayed a series of Arcs along the bottom of the monitor.  I stopped the process, concerned that there may be a video issue, but booting a XPE windows version showed no Arc.  I also booted a few other Linux devices with no issue, but to do so had to disable Secure Boot.  I usually do this first when building PCs, but did not in this case. At this point I learned that disabling Secure Boot removed the Arcs.  I was able to replicate this on another 3060. Is this related to Secure Boot, the particular install I used or something else.  Google did not help, but note sure what to call this.  I am most interested to confirm it's not a hardware issue, though I think that I can replicate the issue on another device rules that out. Any thoughts? The arcs disappeared at the first install screen and the OS installed as normal.  I do not see the arcs when booting the PC.

John harper · Accepted Answer

Step 1: Press the three keys simultaneously – Alt + Ctrl + Del and reach the "shut down" option. Step 2: Select the drop-down menu with the "tab" key and use arrow keys to select "restart." This will restart the system, and probably the black screen issue disappears.

JOcean · Answer

I have had this issue on systems that did not have Secure Boot enabled but they booted into Windows normally and ran Windows without a problem.

redxps630 · Answer

Lol. Those patterns are not scary or ominous. I see them a lot on both Dell desktop and laptop on initial boot screen when I use usb to install windows. Just ignore it. Once Windows installation complete loading files from usb, a normal Win 10 installation screen will appear with no strange pattern, which you already know. They are basic video adapter quirks and not limited to your pc. A completely innocuous, idiosyncratic and transient video pattern. Agree w JOcean, has nothing to do w secure boot on or off.

also, they can look like some other stacked pattern depending on which Dell pc. I just never bothered to capture them on camera once I got used to them.

RangerZ · Answer

I have been doing this for years and never saw it before. The fact that I could replicate it made me think there was something to it.

I had no issue installing or running the PC after the first few seconds of weirdness.

Thank you

Optiplex Desktops

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