Questions
Q1
Try to do 4 monitors output with A880GZ (on-board D-Sub+DVI) and ATI HD5450 VGA card, but it will not display while boot to Windows.

First, please go to BIOS and set 1. Primary Video Controller: GFX0-GPP-IGFX-PCI (BIOS default). 2. Surround View: Enable. 3. VIOS Type: HDMI or DVI.

Download VGA Driver : Catalyst 10-9 (V8.771.0.0) and remove other VGA drivers.

In Windows, open ATI CCC countrol panel disable Crossfile selection and save setting.

After system restart, 4 monitors will be able to support properly.