@lindasal
I reviewed your post and I understand that the external hard drive is not getting detected on the computer.
Don’t worry, I assure you I will try my best to get this sorted.
What is the product number of your computer?
Have you checked the hard drive on all the USB ports?
Are other devices working on the same USB port?
Meanwhile, I recommend you update the BIOS and the chipset driver from the below link and check if it helps.
https://support.hp.com/in-en/drivers
Let me know how it goes and you have a great day!
P.S: Welcome to the HP Support Community 😊
If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!
Cheers!
Stay Home – Stay Safe
The_Fossette
I am an HP Employee