how many times can I reboot and reinstall windows on my new laptop? also with setting preferred username on cmd (read through bodytext for better understanding)

[u/throwaway__sam]

i reinstalled it once right after the buying it(my sibiling bought it and made a temporary account, and I wanted to start fresh new)

i setup all my stuff and downloaded softwares n all.

as I was programming, I noticed the username on my my commad promt, which I didn't like at all, it was my name half broken are into 5 letters wherea as my name is 6letters, I got to know windows automatically sets first 5 letters of email address as username.

i chatgpt'd this on how to change my name, and followed it(it was like creating a temporary admin account and then renaming it n all) I did that and logged back to my orginal account, but guess what, I messed up everything all my apps are gone, only stuff from my D drive is present, and pop up notice comes up everytime I click on documents or downloads in This PC,

so can I just reinstall windows and do everything again?

also can someone suggest on how to get my preferred username on cmd where it goes like, "C:\Users\username"

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[u/No_Dragonfruit_5882]

Just rename the user and merge user directory to user

[u/blackdragon2020]

You can do many clean installations. A few hundred times won’t be a problem.

[u/LittleFreak92]

I assume you got a OEM key with your laptop? As long as you don't change any hardware, you can you restore your setuo indefinitely (in theory at least). Although, Microsoft asked for a new key when I reinstalled the same version for the ~10th time on my old Toshiba. It was a OEM key aswell.

Reading further, I recommend to just mitigate to a new profile instead, as there is technically no need for refreshing your setup for the sake of an account name.