A little bit ago I took a look at an HP All-in-one computer and I found it looks and works great. Hp though has just introduced a new All-in-One aimed at Businesses, it’s th4e Compaq 6000 Pro which features a choice of Intel Core 2 Duo CPUs, Windows 7 Pro, up to 8gigs of DDR3 ram and you can even get an SSD in there. The main monitor is 21.5 inches and it’s an HD LED backlit monitor with dual display capability.
Ideal for mid-market, corporate and enterprise environments, the new 
Pricing and availability
The HP Compaq 6000 Pro All-in-One Business PC is expected to be available in the United States on July 16 with a starting price of $899.
The PC includes a three-year on-site limited warranty, next business day service for parts and labor, and free 24/7 telephone support as well as select HP Care Pack Services