Jrock289

I purchased a new Sannce 8 camera home security system Model D8908C. My problem is this. After cameras were installed and DVR connected I used a HDMI cable to connect to my tv. All was fine right up until I tried changing my screen resolution. The DVR said it needed to re-start and I never got a picture back. I did NOT set up wireless connection or network connections yet. So I can not connect remotely to factor restore DVR. I have tried pulling CMOS battery for over 24 hours as well as tried using a CPU monitor. I pulled the power on all the cameras as the CMOS battery was pulled and still nothing. Please help..