This is your original motherboard:http://www.e4allupgraders.info/dir1/mot ... GVSR.shtml
These models come with a Bestec power supply that should be replaced as soon as possible, they kill motherboards and other components.
You can fit any micro-ATX board. But you need to replace the processor/memory and probably video card (or buy motherboard with onboard video). You will need to reinstall windows as well, so if you still have a running machine, backup your data now.