HD not detectable even in BIOS

Welcome to tenforums.

History please: (so often omitted by posters)
- when could you last access this drive?
- when did you last check this drive (with a 3rd party tool) - SMART parameters?
- what happened before it became inaccessible?

How critical is the data?

Do you not have a backup?

Please provide make and model of disk.

@jumanji is the expert on drive problems- you may have to be patient.

Welcome to the Forum

There are some drives that work on a their case but don't work on a computer.
Please give us a little story of the drive and all drive specs (brand, model, capacity etc)

The first software loaded on a computer is BIOS.
If the drive was on the computer and now it doesn't show on BIOS the drive is probably dead.

Hi @Susan,

My first query: As per your minimal specs, you have an OEM (Dell) Desktop. Did it come wtth Windows 10 Enterprise installed? Just curious.

Please do answer the queries raised by dalchina and Megahetz. Without a full history, no one can categorically say anything as to what could have happened and give any help/advice..

As Megahertz pointed out, if that HDD was working in your system previously and now it is not detected even in BIOS, it is already dead. With minimal data and history, that is the only conclusion that can be reached.

"Do I have any options before paying a lot of money to go to a professional to get my data back? Any help appreciated."

Without further investigation, no answer.

Do you have access to another working DeskTop/laptop?

Will you be able to take the HDD out and directly connect as a second drive in another working Desktop?

Second option: Will you be able to put the HDD in a working enclosure and USB plugin to any working DeskTop or laptop?

That will help to ascertain whether the HDD is dead or not.

If our investigation reveals that the HDD is not dead, we shall try data recovery.

If it confirms, yes indeed the HDD is dead , no other go except turning to Professional Data Recovery. ( No Do-It-Yourself data recovery is possible.)

Megahertz said: "There are some drives that work on a their case but don't work on a computer."
You may also see the post here Hard Drive works in Docking Station but not when hooked up to PC.

For irreplaceable data I used this firm to recover a companies books a few years ago, did a good job on a non-bootable or
non-accessible drive:
Ontrack | World Leaders in Data Recovery and Data Erasure
When they receive a drive and deposit they inform the owner and suggest the next steps.

Susan said:

.....I'm kind of assuming the drive is dead, also. So thank you for letting me know to take it to a pro if we want to pursue it............. I do have access to another working computer that I can put the drive in as a 2nd drive. ...........We do not have a docking station or any "case" to put the drive into, no. ........

Too premature to assume that your HDD is dead. Not yet.

Since there was a sudden power outage, it could have killed some sensitive component in the motherboard also.

To rule out that possibility, safely remove your HDD, plug it into the other working desktop as a secondary drive and check whether the HDD is accessible. If the HDD is not accessible and the BIOS also does not show the secondary HDD, then send it to Professional Data recovery as Berton advised.

Let us know.

We do not have a docking station or any "case" to put the drive into, no.

Just FYI: this drive seems to be 3.5" .. (noted you said you can try it in a different PC).

You could check that the SATA and power connectors are properly connected to the drive and motherboard and try another SATA cable,. Also check in the BIOS that the SATA port being used is enabled.