I have an Acer Aspire E5-575G laptop. It came with a 256GB SSD in which Windows 10 was pre-loaded. Machine was shut-down two days back and on starting it yesterday morning, throwed "No Bootable device" error. It took a long while even to throw this error. Lost my recovery drive and hence created a Windows bootable USB from Microsoft website to repair it. After much of troubleshooting through various options, it is found that my SSD had gone empty and no partition is found now as per Diskpart. I am not sure whether I can recover the data from there, but I can install windows from the bootable USB. I have the laptop serial number, but not the product key for windows. There is no sticker on the laptop with Windows product key. I cannot find it anywhere. Though it can be found using wmic commands as the disk is completely empty and no windows in there, I cannot run these commands. If I reinstall windows, will it ask for a product key and if so, how do I get it?
(Thread was edited to add model name to the title)