It needs maximum 256 MB and runs fine on all settings with the default texture pack. If you have 1GB RAM and use a 2GB launcher it will crash your game and computer.
Try to reinstall the launcher and / or Java.
You need Java.
you need to be in multi-player or a server to make the TNT work.
Sometime you have to press fn to make it work.
No the HP AC adapter will not work on a Pavilion. You would need to find the specific adapter for the model you have.
Make sure you port forwarded it correctly.
Download a app hosted program and download Sims 2.
The mod developer will need to update the mod to be compatible with the new Minecraft version.
Unless you work for Mojang, I don't think you can make an update. But, what you could make is a Mod.
First Make sure you closed minecraft COMPLETELY then install the skin (re install) It should work correctly if not you don't have a premium account
The Pavilion had quite a few designers but the building that can be seen today is mostly the work of John Nash.
Beds were not introduced into Minecraft until Beta 1.3, so no.
Minecraft 1.4.6 mods will work with 1.4.7 sense they are both a 1.4.