recovery

I had Windows 8 installed on my HP laptop with core i7 and I planned to install windows 8.1 instead. I backed up all the contents on the last partition and started the procedure. Due to MBR format Windows 8 setup asked me to convert it to GPT and i looked over on youtube and did the Diskpart on...

Do you know how and where I would get a USB recovery tool for this system without having the key? Windows 8 I believe. HP 15-f018ca Notebook PC - Hard disk (3F0) error