I basically have a HP Pavilion a706n. I had it plugged into a surge protector but when I came home the electric company was doing work right by my house and said the electricity would be off. Iv never been able to turn my computer on since. It was working ok before but recently the nvidia graphics CARD had stopped working and I had to remove it and go back to the original....it's an old desktop but it still worked fine for me. Now there's no sign of life, just won't turn on at all, no light on the power supply or anything. I have very limited funds and so I just wanted to try and get my files out of the hard drive if possible? At least see if they are still available? I have done some searching online and from what Iv understood I would need this or something like this:

http://www.amazon.com/gp/product/B000J01I1G/ref=ox_sc_act_title_2?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

Is this correct? Is this a good choice of product? My harddrive says ''Barracuda 7200.7 160 Gbytes model: ST3160021A''
 
Iv tried finding information myself but would appreciate someone confirming this for me. Is there anything else I need to KNOW? Thank you for your time. Exactly the gadget that I have used in the past....GREAT thinking...Keep at it...

Wishing you well...BlairI hate to point it out, but you will also need another computer to transfer your data to. That device is great because you can use it for eide and sata drives. If you know you will only be working with sata drives, you can search get this one - http://www.amazon.com/Patuoxun-Converter-Adapter-Cable-Drive/dp/B008ASF5MC/ref=sr_1_3?s=pc&ie=UTF8&qid=1427901975&sr=1-3&keywords=usb+to+sata+cable and it will save you a bit of coin.Hi

Your drive is an IDE so stick with your first choice. The HP would have been using Cable select. 
When you use a USB to IDE adapter like the Vantec you need the drive jumped for master.

The manual for your drive is here http://www.seagate.com/support/disc/manuals/ata/cuda7200pm.pdf

And the jumper settings are on page 21
Th item below cots less and does the same thing.
http://www.amazon.com/New-Wayzon-Adapter-Converter-External/dp/B001OORMVQ/ref=pd_bxgy_e_img_y

Awhile back some of these were junk. But Amazon is rather sharp about shifting thru the junk. For occasional backup with a spare HDD, it will work fine. That is the kind of thing I use for backup. 

Note: This kind of thing has no enclosure. And no power switch.  Be careful Do  plug in the drive before plugging in the power to the wall outlet. Th HDD connectors are NOT hot swap connectors and are not fool PROOF. And don't place a  naked drive on on top of loose metabolic objects like paper clips, thumb tacks and metal bottle CAPS.