While power switches usually don't care about polarization (+/-), ensure they are firmly on pins 6 and 8.
With a deep breath, he plugged in the power supply and pressed the case button. A faint click, a whirl of the CPU fan, and the screen flickered to life. The Acer IPISB-VR had woken up once more. Front panel pin installation, help! - Acer Community acer ipisb-vr rev 1.01 front panel
: Your case will have several small, two-pin connectors coming from the front panel. Each is typically labeled: While power switches usually don't care about polarization