Is my graphics card adequate for gaming, and is my DVD reader and hard drive ok?

I'm going to be using this system for gaming, mainly less demanding games like Minecraft, so is this graphics card good enough?

http://www.overclockers.co.uk/...=GX-161-PC

Also is this DVD reader adequate for just installing an operating system and maybe Microsoft Office?

http://www.overclockers.co.uk/...=CD-084-PO

Lastly, I want a 1 TB hard drive but they all look the same with different prices. I don't know which hard drive is best for me to get, because I want a good quality hard drive which will last a few years. Is this OK?

http://www.overclockers.co.uk/...=HD-378-WD

Thanks to any answerers!

Added (1). I don't mean ultimate quality hard drives for £150, but just one which won't break down straight away.

Can't buy Minecraft from their website?

So I tried to buy Minecraft directly from Minecraft.net, and after making an account and proceeding to fill out the credit card information, it said that the information was invalid or whatever… I thought it was something wrong with the credit card, but after I tried two other credit cards AND had my friend try it for me with their credit cards we had the same problems…

Does anyone know if it is something wrong with the website or if their is maintenance or something? I want to buy it to play with my friends but I can't purchase it… If it changes anything I live in America…

My Minecraft is not working on my Mac? Freezes on Mojang screen?

It started up two days ago and I'm not sure what to do. Every time I click to play Minecraft, it'll load and then it will stay frozen on the Mojang screen and the only way to get out of it is by force quitting it. I've tried restarting my computer, I've tried reinstalling Minecraft. I even went in and deleted any and all files associated with Minecraft. Nothing is working and I have no idea why or what it could be.

Which laptop is best for me?

I'm a student/gamer that would like to buy a laptop for Minecraft, League of Legends, Skyrim, and some other games. I have a budget of around $600, so if you think there's a better option for me go ahead and say. As of right now, though, I've gotten it down to two somewhat similar laptops:

HP Pavilion 17-e171nr:
Windows 8.1
AMD Quad-Core A10-5750M APU with Radeon HD 8650G Graphics (3.5 GHz, 4 MB cache)
AMD Radeon HD 8650M/8670M Dual GPU (1 GB DDR3 dedicated)
12 GB DDR3 Maximum memory upgradeable to 16 GB
2 DIMM
1 TB 5400 rpm SATA Hard Drive

HP Envy 15z-j100:
Windows 8.1 64
AMD Quad-Core A10-5750M Accelerated Processor
2GB AMD Radeon™ HD 8750M Discrete
8GB DDR3 System Memory (2 Dimm)
2 DIMM
1TB 5400 rpm Hard Drive

Anything helps!

Added (1). If you say I shouldn't get either of these, please say an alternative.

My mouse won't work on Minecraft?

So, today, I was playing Minecraft and everything was fine. Then I quit for a while, and started again. I started playing and when I looked around, the mouse freaked out and turned at like double the speed while being only 2 FPS. But when I pressed ESC to see if something was wrong, my mouse worked fine. Only while in-game is it doing this. I don't know what's wrong, and I looked it up and I found nothing on it. Does anyone have any answers?