Reboot try Safe Mode on F8
If that does not work go back to BIOS and check the time and date settings in BIOS, if they are NOT correct reset them in the BIOS and then try again on Safe Mode
When you reset the time and date, if you do have to, make sure you save the settings as you exit. Normally F10
and WHILE you are back in BIOS check again to see if the HDD is NOW recognised after the BIOS rest to defaults and ALSO from my previous post - if it is check what drive is shown as the boot device in BIOS on the Boot Heading.
The HDD does not have to be the first drive on the Boot priority but it must be listed.
IF IT IS still NOT shown in BIOS when you go back in, then the drive is not recognised and the Windows screen that appeared is there from part of the hidden recovery partition.
Your NEXT step if the drive is NOT shown is to take it out, connect it to another computer in an enclosure or if you know HOW in the computer a s a slave drive and retirieve your data.
AGAIN the information is on the link I previously sent you on my post 6.
To save you looking it is here again
Alternatively if you would rather you may try this
It requires a writeable CD follow the instructions on the link
The download link for Puppy goes to a different edition than the 5.2.0 LUPO
Use this LINK to download Puppy and then follow the rest of the guide including the burning instructions.
This is the desktop you will see when you boot to Puppy
It is an ISO image so you must use that burning program, included on the link.
You will of course have to make this on another computer.
With a bit of luck, you may see the HDD as the image on the far bottom left of that desktop image. It looks like a HDD,
A flash drive is the icon next to it and a CD drive looks like a CD
There is a chance that although the drive is not seen by Windows that you may still be able to see it in Puppy.
Generally speaking, if you cannot, the drive has failed.
Also Puppy is a good test of the rest of the hardware.
IF PUPPY will not see it, then the ONLY option left is its removal and connect direct to another computer to see if there is any option to view it there.