I bought a refurbished HP Z420 Workstation from Compeve for $574. The copy of Windows 7 that came with it was defective, which ended up ruining the whole computer. Windows simply failed to start. After talking to Windows and HP experts for two months, I was never able to solve this problem. Windows simply wouldn't install even when I tried to install the necessary drivers. I asked for a refund and was denied because it had been more than 30 days. I've never had greater buyer's remorse than this.
Lincoln, New Hampshire