What just happened to my Power Mac G4 ..?

My 2nd Hard Disk gave out a while ago, only temporarily, before my computer somehow miraculously fixed itself, but ever since then, my graphics card hasn't been detected ..
Has my graphics card just stopped working and my mac started using a built-in one, or is my mac just not detecting it?
I wanna play AoE3 again


Apple Power Macintosh G4 933 (QS 2002)

ATY,RADEON:
Chipset Model: ATY,RADEON
Type: Display
Bus: PCI
Slot: SLOT-2
VRAM (Total): 32 MB
Vendor: ATI (0x1002)
Device ID: 0x5144
Revision ID: 0x0000
ROM Revision: 113-77701-225
Displays:


Sorry for any stuff I may have left out, a bit new to Macs.
Also, another random issue, my system preferences disappeared .. is my mac just finally biting the dust? :\

WGoins88 said:

What G4 do you have? There were many different models.

http://www.everymac.com/systems/apple/powermac_g4/index-powermac-g4.html

Click to expand...

Ahh, my bad.
Apple Power Macintosh G4 933 (QS 2002), 933 MHz PowerPC 7455* (G4)