Upon first inspection, the CPU states Windows 7, but the description states Windows 10 64 bit.  The unit itself was dusty and damaged from obvious long-time use.  One of the front ports was covered with tape, indicating (to me) that this was not usable.  After hooking it up my monitor, the system indicated that there was an error and needed to restart.  Even the wording was a little fuzzy and not clear.  I clicked on restart and let it do its thing. Once that was done, the same message appeared, then again and again.  This is as far as I got.Very disappointing to receive a product like this from a seller.  This was clearly a piece of junk computer with many years of use that nobody wanted.  The least they could have done was double-check the unit before shipping . Buyer beware.