HP Pavilion 23st Touch All-in-One PC
While there are upgrades available for this computer, the starting setup is more than enough to make it a decent system on a budget. It has a 6th Generation Intel i5 quad-core processor for great speed and performance, as well as 8GB of RAM. While this isn't mind-blowing, it's more than enough for common tasks and quite good for this type of all-in-one system, plus you can pay a bit more to upgrade to more memory or an i7 CPU. The integrated graphics chip is decent, though it would be nice if there was an option to upgrade to some dedicated video memory.
This model has a 1TB hard drive, which gives you a good amount of storage, and a DVD burner, plus you can upgrade those to up to 3TB of storage and a Blu-ray player. The 23 inch display on this model is touch-sensitive and it comes loaded with Windows 10. While you get Wireless-N connectivity in this system, you have to pay a bit more if you want Wireless-AC and Bluetooth networking.