I had this issue too and, after weeks of pulling my hair out, think that I may have finally found a fix or at least a hint of what the issue *might* be related too.
There is a major issue with the Intel 13xxx and 14xxx series CPU. Here is a video explaining the issue:
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Basically the CPUs are being over-volted because motherboard manufacturers are not using the recommended specifications and are instead feeding the CPU's the maximum possible voltage. Yikes. Here's another video exlaining:
My computer uses an Intel i9 14900k CPU on an ASUS z790f motherboard. I was having horrific stability issues. Everything was crashing at completely unpredictable times and I was running into all sorts of weird errors (like this strange installer issue). My computer is basically brand new, has a GTX 4090, and is built by Maingear so it is water-cooled and the whole works. In *theory*, it should be performing flawlessly and yet it's the most unstable computer I've ever used. I have hated owning it, to put it mildly.
THE SOLVE: The motherboard manufacturers have updated their BIOS to include a new setting that actually limit the CPUs to the voltage that they are specified to have. So for owners of 13th and 14th gen i9 CPUs:
you have to update your bios firmware and then activate the setting to use the Intel specified voltage. It's sort of the opposite of overclocking: instead of pushing performance at the risk of a crash, you're limiting performance to increase stability, which is our goal in production.
Other things I did:
In the bios I also
disabled XMP on my RAM. No reason to push things. Just let it run at the lower clock speeds. Again, trading a little performance for stability.
I
re-installed Windows totally fresh.
Lastly, I
switched to the studio driver on my 4090 rather than the game drivers. Again trading performance for stability. I just want stable. I am not interested in pushing my computer for a 5% performance boost or whatever. I want to be creative and use my tools.
After doing all of this, I saw a big stability increase on my machine. Blender was working again, which is the next most common program I use. I decided to try to install Davinci again. I "ran as administrator" and it failed again. Same error. (Oh no!) But then I just ran it regularly (after fully unzipping it using 7zip) and it actually installed.
Miracles never cease.
So I don't know what it was in there that was causing all the headache but the TLDR is: update your motherboard BIOS, turn down your settings to "normal" settings rather than overclocked and your computer might start to behave quasi-normally again.
May you have less stress than I did. Good luck. Also please chime-in if you're having issues and also using an i9 processor. I'm curious to know if that's the common thread here.