Windows 7: Is anything broken?

I was playing Minecraft and accidentally spawned 800 Creepers which lagged the System, I waited and forgot to press Ctrl-alt-delete to end, and then did it.

I then get really slow 30kb/s data transfer speeds and really noisy fan..

I have turned it off and plan to keep if off for a few hours.

What should I do?

Turn it back on. Usually a reboot will settle things down.

All you really have to do is keep an eye on that fan.

It is still quite loud, the Desktop Is on a carpet if that matters. I can even feel cold air coming out of the fan.

There are some machines that adjust the fan speed depending on the system load. Cold is good!

It would help if you would post your system specs, even though you have Ultimate x64, Minecraft can be hard on a system.
How-to is located in the green info box directly below the reply box.

Have you noticed any other performance anomalies?

To help: Optimize Windows 7

Being on a carpet is not bad per se, but it will collect more dust, and dirt.
If you have had it there longer than 6mos. I would consider pulling the case cover to give it a cleaning.

Well right now I actually have 32 Bit with 8GB Ram :S because my 64 Bit disk wouldn't work.

It's temporarily 32 Bit till I get 64 Bit. So only 3GB

System Specs Updated.

I left it off for 12 Hours and it does seem much quiter now, however I am still worried.

I can now hear some squeaky noise.

One thing you need to realize is there can be more than one fan inside your machine, such as: cpu fans, video card fans, system fans, and even fans inside power supplies.

Here are two tutorials on case maintenance: Computer Maintenance Guide, and Cleaning the Interior of your PC Especially check the part about fan rotation.

You can also go online to YouTube, search for fan, and or computer noises, and you will be able to hear what the different sounds, sound like.
Be specific, and use the name of your cpu, video card, system fans, and power supplies. If you built this PC yourself you will need the actual name of the component.

Is this, a brand name model or did you build this yourself?

It was a Brand Name Model.

Would you be willing to elaborate on the name or is it a national secret?

Zoostorm