boot device not found hard disk (3fo) install operating system

[spiritrider67]

i have a used laptop HP Stream - 11-y020wm all it will do is show a black screen that says 

boot device not found

please install an operating system on your hard disk

hard disk (3f0)

f2  system diagnostics

have ran system diagnostics says hard drisk and memory pass

cant get into bios because of unknown password 

how can i install windows on it and get into bios

[WAWood]

@spiritrider67 

Let's deal with your second question first -- you can't get into the BIOS if it is password protected and simply put, there is no way around that.  The password is encrypted into the firmware of a chip inside the PC and that can not be changed by you.

You probably will not be able to reinstall Windows because that error code indicates the drive has failed. 

Ordinarily, when a laptop no longer boots into Windows, this means that the boot records (known as the BCD) have become corrupted due to a failing drive and running diagnostics confirms this to be the case. Folks then replace the laptop drive, use the HP Cloud Recovery option and a 32GB USB stick to make recovery media, boot their laptop from that media and do a full restore.

With a Stream, this is a much more difficult situation.

First, the Stream does not actually have a laptop hard drive. Instead, it has a memory stick configured to work like a "disk drive" -- so, it has a stick of EMMC memory instead of an HDD. This is very small, usually 32GB, so it is too small to do any major Windows Updates since Windows takes up nearly all of the "drive".

Second, the SSD, unlike the SATA SSDs in other laptops, can not be replaced by the consumer. So, when it fills up, you can't replace it with a larger one. And when it fails, you can't replace it with a new one.

Thus, you can try running diagnostics to test the drive -- but if it fails, you will have to take the Stream to a laptop repair facility to have them replace the SSD. You can not replace it yourself.