The system suddenly stopped booting.

[Richjoe1]

Even after carrying out the said BIOS Diagnostic Tests, still the system doesn't BOOT, what should I do, please?

[WAWood]

@Richjoe1 

You said you did the tests as recommended on-screen, so you did do the Hard Drive test -- and it checked out OK?

Asking because if that is the case, it may be a simple matter of just rewriting the boot loader files to get your PC working agai.

You will need to create Boot Media using a working PC -- as there is no way to repair this on your current PC.

Macrium Reflect is a free tool that can be used to image and restore PCs, but it also has an option to create Rescue Media (in disk or USB form) that can then be used to Repair your PC.

It is available from here: http://www.macrium.com/reflectfree.aspx

What I recommend is the following:
a) Download and install Macrium Reflect (MR)
b) Use the option to create a boot USB stick or CD
c) Boot your PC from the MR media and select the option to repair the Windows Boot

Good Luck

[Richjoe1]

Hard Drive Check report

Well, @WaWood, thanks for your exceptional and timely response. However, while all other diagnostic tests are positive, the above picture contains the report of the Hard Drive Check*. Yet, the PC hasn't been opened in recent time.

So, what can I do right now about this?