Help! Clean install of 8, can't find ISO

Help! Can 8.1 upgrade key clean install 8.1 (has 8 sticker

Corrupted windows 8.1 system. Has windows 8 sticker on bottom and was Upgraded to 8.1

Reset and refresh failed. May have been wiped before. Acer management Recovery gone as well.
Need to clean install but Can't find 8 ISO online anymore. Don't I start with installing 8 which will grab the key in bios?
I have 8.1 ISO. The belarc revealed an 8.1 windows Key
Will this key work if I clean install using 8.1 or will it reject it since it's an upgrade key

Just clean install windows 8.1 - it will find and use the windows 8 product key

Okay thx. So 8.1 is sort of like a service pack was to windows 7 and not a separate key?? I was reading online that 8 keys would not activate 8.1. Hmm

The new Windows 8.1 ISO's now accept Windows 8 keys. What you were reading is outdated. Windows will read the embedded key in the BIOS and activate automatically. The version of Windows you install must match your key or it will not activate. If you key is for Win8 Single Language and you try to install Win8 Home or Pro it will not activate. You must install the same version as the key.

Download a copy of ShowKeyPlus. It will tell you everything you need to know about your key.

Showkey - Windows 10 Forums