[spunk.funk]

According to the Pic you attached in Post #19 though you moved the phone/camera while taking the picture, making it blurry.
Under the Main tab, you have a 512 GB T-Force SSD installed. So, the computer recognizes your SSD, now you just have to install Windows 10 to it. Why do you think the drive is not recognized by Windows? Unless you haven't installed Windows yet?
Also according to the Bios, it recognized a +65 W AC power adapter attached.
Go to the Advanced tab, there should be a section for the laptop Battery Health.

It is hard to see with such a blurry picture, but at the bottom you can Set the Bios to Defaults, I believe it is by pressing F9
Save and Exit

 

[manhattanman]

According to the Pic you attached in Post #19 though you moved the phone/camera while taking the picture, making it blurry.
Under the Main tab, you have a 512 GB T-Force SSD installed. So, the computer recognizes your SSD, now you just have to install Windows 10 to it. Why do you think the drive is not recognized by Windows? Unless you haven't installed Windows yet?
Also according to the Bios, it recognized a +65 W AC power adapter attached.
Go to the Advanced tab, there should be a section for the laptop Battery Health.

It is hard to see with such a blurry picture, but at the bottom you can Set the Bios to Defaults, I believe it is by pressing F9
Save and Exit

Sorry about that pic. It was hand-held with a very old, low res digital camera. This was the best pic out of the 10 I took - and edited for the best results. I've yet to execute the #20 suggestion. The SSD has Win 10 installed. Will get back.

 

[manhattanman]

Pressing F2 will take you into the System Setup page ... I see no information about getting into the system information page. Information seems to be limited to this document.

How to Use and Troubleshoot the Inspiron 15 (7548) | Dell US

View attachment 339627


I have failed to find any photos or similar to show step by step guide through the BIOS.

I did notice though that a service manual is available for downlosd, but doesn't cover setting up the BIOS.

After trying both options, the F2 screen remains as pictured above. On "restart", I get the same "No Boot Device Found. Press any key to reboot the machine," message on a black screen. Incidentally, I had the new battery charging for 6 hours last night. It doesn't operate the machine if the adapter is disengaged.

 

[spunk.funk]

On a Dell, When you press F2 and Enter Setup (Bios) that screen is always going to look the same like that.
At the bottom of that page, on the Blue Border it says to press F9 to Load Defaults. Press this restart and boot back into the Bios.

As stated in Post #21, under the Main Tab of the Bios it recognizes your SSD drive. But it does not have an OS installed on it.
Go to the Boot Tab. Here does it show UEFI Bios or Legacy/CSM?

Also under Boot, if UEFI Bios, it should say the first boot device should say Windows Boot Manager and it should list your SSD, unless there is no OS installed on it.
To Install Windows you will need a USB Flash drive burned with the Windows 10 ISO Image using the Media Creation Tool. on that same page.

 

[manhattanman]

On a Dell, When you press F2 and Enter Setup (Bios) that screen is always going to look the same like that.
At the bottom of that page, on the Blue Border it says to press F9 to Load Defaults. Press this restart and boot back into the Bios.

As stated in Post #21, under the Main Tab of the Bios it recognizes your SSD drive. But it does not have an OS installed on it.
Go to the Boot Tab. Here does it show UEFI Bios or Legacy/CSM?

Also under Boot, if UEFI Bios, it should say the first boot device should say Windows Boot Manager and it should list your SSD, unless there is no OS installed on it.
To Install Windows you will need a USB Flash drive burned with the Windows 10 ISO Image using the Media Creation Tool. on that same page.

Under "Boot", no UEFI or "Legacy/CSM" is shown. Only "File Add Boot Option", "Secure Boot", "Secure Boot (Enabled) and "Load Legacy Option Rom (Disabled)" with "Boot Option Priorities" also shown. Also, It takes about 30 seconds for the machine to show a picture after startup and it keeps beeping 5 times when moving into F2.

 

[spunk.funk]

As discussed in Post #18 looking at the lined page, at the Dell Beep Codes, 5 Beeps is a Real-Time Clock Power Failure
You can try and reset it.

How to Reset the Real-Time Clock (RTC) to Recover Your Dell Desktop System | Dell US

Every Bios is different, especially ancient ones, like yours. You have to decipher the closest wording that you are offered
"Load Legacy Option Rom" is better known as Legacy Bios or in newer models, CSM. (ie) which is MBR Bios.
"Boot Option Priorities" is also known as First Boot Device. Your SSD should be listed as the First Boot device, if not change it.

You can Enable Legacy Option Rom to be able to run a drive that is Initialized MBR (old Bios type)
Try also Disabling Secure Boot, you may need to return here to Enable it, if your SSD is Initialized GPT for UEFI Bios.

Save and Exit, See if it improves.

 

[manhattanman]

As discussed in Post #18 looking at the lined page, at the Dell Beep Codes, 5 Beeps is a Real-Time Clock Power Failure
You can try and reset it.

How to Reset the Real-Time Clock (RTC) to Recover Your Dell Desktop System | Dell US

Every Bios is different, especially ancient ones, like yours. You have to decipher the closest wording that you are offered
"Load Legacy Option Rom" is better known as Legacy Bios or in newer models, CSM. (ie) which is MBR Bios.
"Boot Option Priorities" is also known as First Boot Device. Your SSD should be listed as the First Boot device, if not change it.

You can Enable Legacy Option Rom to be able to run a drive that is Initialized MBR (old Bios type)
Try also Disabling Secure Boot, you may need to return here to Enable it, if your SSD is Initialized GPT for UEFI Bios.

Save and Exit, See if it improves.

None of these options work. The machine still doesn't recognize the SSD when booting (but it's shown on the bios page and functional in another machine) and doesn't recognize the attached main battery, which was new when bought a year ago. It was charged for 6 hours. Also, the keyboard performs stubbornly and doesn't light-up as it should. Might it be a keyboard issue?

 

[spunk.funk]

No there is a Bios issue. (Real Time Clock)
If you can enter Setup (Bios), set it to Defaults, the key is identified at the bottom of the Bios screen, usually by pressing F5.

If that Fails, Clear the CMOS, replace the Battery, if you can.
How To Clear CMOS on Dell Inspiron 7548? [Reset BIOS]
If still fails, the motherboard may be damaged beyond repair.

If trying to install the Windows OS to the SSD, then you need to install the IRST driver.

Intel® Rapid Storage Technology Driver Installation Software with Intel® Optane™ Memory (10th and 11th Gen Platforms)

The Intel® Rapid Storage Technology (Intel® RST) Driver (18.7.6.1010.3) supports the configuration and enabling of multiple features.

www.intel.com

Download the IRST driver and place it on the Root of your USB Flash drive.,
Boot the from the Windows Installer USB.
Choose your Language, then Install Now, then Custom Install.
In Where do you want to install Windows? if it does not show your SSD,
Then Browse to look for drivers, and select the IRST driver on your Flash drive.

After Rebooting it will recognize the SSD to install Windows to.