P2120 does not recognize SSD

It's possible that the issue you're experiencing is due to the fact that the boot order in your BIOS is set to boot from the SSD first, and the cloned hard drive is not being recognized as a bootable device.
One way to fix this would be to change the boot order in your BIOS settings so that the hard drive is listed before the SSD. To do this, you will need to restart your computer and enter the BIOS setup by pressing a key (usually F2, F10, or Del) during the boot process. Once you are in the BIOS setup, you can use the arrow keys to navigate to the "Boot" menu and change the order of the boot devices.
Keep in mind that the specific steps to enter the BIOS and change the boot order may vary depending on your motherboard and BIOS version. You may want to refer to the documentation for your computer or motherboard for more specific instructions.
If you have already tried changing the boot order and are still having trouble booting from the cloned hard drive, there may be other issues at play. For example, the hard drive may not be properly formatted or may have some other problem that is preventing it from booting. You may want to try using a disk utility like Disk Management in Windows to check the status of the hard drive and see if there are any errors that need to be fixed.

Computer is probably too old to recognize an SSD. You may be able to find a firmware upgrade. Did you boot into the BIOS and try and find the SSD?

https://www.google.com/search?q=Compaq+presario+c500+dos+not+detect+ssd+hard+drive

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HDD answered first.
id did this just as lawn needed mowing
or learn how setup ms defrag, it even can be auto scheduled.

no modern ssd need that, all self defrag,(trim) (super relics no)
"do i have" well
in w10 click on cp control panel then then device manage
and the open disk drivers it tells you all there. maker and model
the model number can be google and see spec on any drive made on earth ever.
no w10 does not auto-fragment any ssd MADE. NEVER.
IT KNOWS IT IS THERE OR NOT
ONLY you do not know yet.

it's like the old draino commercial ad.
would drain-o let YOU hurt your pipes??????? NO.

check on the bios whether the hard ware is recognized or not

Hi Robert,

IT could be that the Barracuda drive is formatted for boot up. I would boot up with the drive that boots, and make the Barracuda a spare drive, so you can go in and first see if has any issues as a drive,(meaning sector 0 errors, and if you can access it, then you can format it as a boot up drive, or get what data on that drive off for your friend.

Good Luck Mark

When you say "not recognized", do you mean that the drive does not show up under "My Computer" with a drive letter? Or that the OS does not even know the drive is there? It is possible that the SSD was formatted using an Ubuntu-specific file system that Windows does not recogize. In this case, the drive may be seen as "Not Activated". To check this in WIN 7, click on START, then right-click on COMPUTER and select MANAGE. When the Computer Management window appears, under STORAGE, select DISK MANAGEMENT. Wait for the window to populate, then scroll down looking for the SSD in the list. It should list a disk number, size, and status of the drive. If it is not ONLINE, then there is a problem. You will probably have to initialize it, partition it, and format it to have WIN 7 see it. Be advised however, that this will remove all data previously stored on it.

Windows should not discriminate one way or the other. Just make sure both drives appear in BIOS first.

I guessing you want the OS on the SSD? Load it first, then treat the 750GB SATA as a secondary hd. Just a suggestion if it gives you problems.

I'm not sure this is your problem, as you question isn't descriptive enough. But here's a solution if I do understand your question correctly.

When I have installed new hard drives in the past, I did the physical install, turned the computer on, and they just worked. Not so with SSDs I've installed. After the physical install, the SSD does not show up in the "Computer" window with all the other drives; because it's not FORMATTED.

Solution:
Navigate through:
Start > right-click on "Computer" in the right pane > select "Manage" > in the left pane select "Disk Management"

All the drives will show up in the main window, including the SSD you just installed. If it does not show up, there's a problem. Maybe one of the cables isn't fully inserted, or there's a defective cable, or a defective SSD.

You can tell the SSD from the other drives by the Gigabyte capacity, and also by the fact that it does not have an assigned drive letter (e.g. C:). Also, it's named something like "New Edition".

To continue to formatting, navigate:
Right click the SSD > select "Format" > select "Quick Format"

A drive letter will be assigned. You are given the option to change this letter if you want. Also, you are given the option to name this drive. This name will appear with the drive listing in the "Computer" window. I simply used the name "SSD", however if you want something more discriptive or colorful, it's your computer, it's your SSD, you can name whatever you want.

The other format option is for when one is installing a used HD which may have bad sectors. That option scans for bad sectors, and takes a LOT longer to format. Not necessary for a new SSD. Plus, you can scan a drive for bad sectors anytime with the "chkdsk" command.

The SSD is now ready for use, including for use as the main drive. Windows will happily load onto this drive.

I would suggest cloning the OS install.
Install the OS on the 80GB SSD with the Foxconn board that is giving you troubles with the 40GB SSD. Then clone the drives and swap SSDs.
WHS 2011 probably will throw up a flag stating that it needs to be reactivated because of hardware changes, but it should go smoothly.

if you have a bootable drive / CD, use it to access automatic repair. it may be because of a corrupted boot file, preventing it from booting.