My mac boots up then once i see the white bar at the top and the walpaper just loads it hangs and all i can do is make the mouse move. So how do I fix this. Also is there an onboard OS on here like the mac classic has?

try restart using Shift key(disable extensions) also boot with mac disk tools floppy, if available, scan for disk errors

I don't have tht disk and I already booted withouit extensions using shift key. It doesn't work.

How do I scan Disk. Also can you tell me all the boot shortcuts (example: Shift does no extensions.)

To turn off system extensions when starting up ,Shift. To rebuild the Desktop,CMD+OPTN. To bypass startup disk when starting up, CMD+Shift+OPTN+Delete. To startup from a CD (if attached)scsi,C key. To Zap pram(stored in parameter RAM) ,CMD+OPTN - P+R at start up. To force restart, CMD+CTRL+Startup Key. the os on mac seems corrupt, disk utilities comes with system floppies, may need to reinstall,

What OS is recommended for it, that can handle a network card or atleast a modem but run well. I would love it if it can be hooked up to my high-speed.

dude buy a mac mini only $599, and no problems jel