Dell, per their Dell website, does sell refurbished computers. Certified.
Theirs, of course. Dells are good.
Just go to www.dell.com and type in "refurbished computers" in the search line. They have a "Dell outlet" on their website.
Here is the link:
http://www.dell.com/outlet?~srd=true&sk=refurbished%2...
I would stick with Dell computers, per PC's.
And Dell is well known for their service and quality of computers.
Nowadays, computers are phasing out disk drives.
It is becoming obsolete as a storing medium.
Or use Thumb drives to load/download/play movies.