Updated review: Within an hour of submitting an issue report to the seller, My Technology Geeks, and posting the "original" review below, they contacted me by phone. Apologized for the troubled product and promised to replace it right away. In addition to providing me with a prepaid fedex return label so I could just pack and drop the original problematic unit, they expedited a new unit to me right away - before I had shipped my return to them.I recvd the new unit within 3 days of my original report. The new unit seems to be in perfect working order.  As much as I wish the first shipment had worked well out of the box, I am pleased to say the replacement unit appears to be working well.I am also impressed with the seller's willingness to address the problem right away and extra effort to expedite the product replacement, before even receiving my return shipment. Based on this experience, I would definitely purchase from My Technology Geeks again.--Originally: Bought this computer as a dedicated videoconference station (Zoom). Really like the specs/horsepower. I've tried to use it for 2 days, but it keeps crashing (going blank, then restarting). Even though it's a refurb, this shouldn't happen out of the box. Makes me wonder if the seller even tested the unit before selling/shipping it.  I sent the seller a polite message asking for help. If they help me resolve, I will update this review. If you see no update, it's because the seller ignored me.