I believe its a SW issue but If you think it’s not, I can provide HW details. I use Win 8 on fairly old Sony Vaio.
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After boot, rotating circles with Windows logo, it takes some time for desktop icons to show, which is normal. But, when they finally appear, they seem to be smaller then expected, or the overall resolution is higher then set (I included photos). The pinned icons and taskbar icons are not present yet. The clock might be off by couple minutes. I also cannot interact with the icons (no highlight when hovered over). After about 20 seconds the screen blanks for a second, and normal resolution is show, taskbar icons appear, and clock synchronises itself.
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The system installation, 2 years ago, was standard, I didn’t change much except disabling autostart disk checkup. This might indicate there is some deeper issue here, but I’m not sure about it since sfc returns normal.
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Other non standard things I’ve done would be disabling updates, manually kicking out AppX, ClipboardSvc, Unistack, and such MS garbage recently. But the problem was present long before I did it.
shell:startup is clear, I don’t use any program that might mess with resolution or graphics in general, standard drivers etc. -
Filenames are blanked for privacy reasons but I left some to compare font and icon size.
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Not sure if this is normal for older PCs or there might be an underlying factor.

