Looking for Desktop PC Advice -- 3 Options

It appears that my desktop has given out, and unfortunately, I have misplaced my Windows 7 installation disk, so I am going to need to buy a system with Windows. I am considering 3 options, all in the same price range:

HP Pavilion p7-1235 -- AMD Quad Core A8-5500-- $450 -- Staples
http://www.staples.com/HP-Pavilio...sc_content

Acer Aspire AM3970-UR13P -- Intel Core I5 2320 -- $480 -- Newegg
http://www.newegg.com/Product/Pro...rue&Page=2

REFURB Gateway DX4860-UB33P -- Intel Core I5 2320 -- $428 -- Walmart
http://www.walmart.com/ip/Gateway...l/21499898

All have 8GB DDR3. The Acer has a 1.5TB hard drive, the other 2 have 1 TB hard drives. The Gateway and Acer offer HDMI out without the need for a video card.

The Newegg deal (Acer) doesn't require sales tax, but there is the obvious disadvantage to buying from them if something goes wrong, even during the warranty period.

Intended use? You just checking facebook and slickdeals, or are you going to be doing anything intensive?

Nothing intensive and no real gaming. Maybe some work with video at home for personal use and occasional streaming. I previously had hooked up my desktop to my LG 55LH90 via HDMI to watch things on the bigger screen. I used an MSI R4650-MD1G Radeon card so the picture quality was good. But I think it was overkill. In any event, I can probably recycle that since I have a spare 400w power supply.

Your Radeon 4650 is decent. It's a tiny bit better than Intel integrated graphics, but it's nowhere near the level of the built-in card on the A8-5500. So, you really have to decide whether you want great graphics card performance is worth it to you. It's probably the choice I'd make here.