Lenovo Thinkcenter

I'm very happy with my purchase from Back Market. It's just what I was looking for.!!++

I purchased this Lenovo ThinkCentre M91P Core i5 2,50 GHz - HDD 320 GB RAM 4GB on BackMarket and It was originally for my son but he changed his mind and wanted something else.Therefore, i never set it up so it was still in same condition as i received it. I originally requested to return it but never got to taking it down to the station to have it return because personal family matter happened and i totally forgot about it. A year later and i am trying to set it up for myself in my office to use and i am not able to use it because it will not turn on at all! It gives me a message on my screen “no signal” and it can not be my cord because i have tested the RGB cord on my son’s pc and it worked fine. I youtube possibilities of why this specific pc tower will not turn on and how to fix it. A-lot of the videos shows that it has to do with the RAMS card. I dis not attempt to open or fix anything and i am waiting for technical representative to get back to me. The price point is awesome but its a bad buy because i can not even use it!