Rendering, film editing, database development releasing, photoshop, very very many programs at once, 1GB/s LAN 24/7 at full load, Scream, brocasting, 3ds Max, blender, AutoCAD, ALL gamesListen mate I would save up and build a new system but then again it depends on what you are using it for ??
PC empty and turn off all the effects.Tink run this tool box > http://www.computerforums.org/forums/cyber-safety-computer-security/pc-cleanup-toolbox-219988.html
Don't do the Black Viper thing. It's for advanced users.
There is no a laptop with at least a six-core processor.As OhSnapWord said your better of building a completely new desktop or buying a better laptop that will be capable of performing the tasks you want.