I recently bought a MSI Radeon HD 7750 and installed it into my computer. When I turn the computer on, the monitor has no signal. Everything is plugged in. The video card fan is spinning so it works, but there is no signal to the monitor. The motherboard is an Asus P5N-MX. I uninstalled the previous graphics drivers and even installed the new ones. I don't understand what the issue is. If someone could take the time to help me I would appreciate it.