Overclocking - Can i use Windows 7 OEM?

I'm building a new computer and i'm planning on overclocking. If the specs matter then i'm getting a GTX 770 OC with 8gb vengeance ram (2x4), AMD FX 8320 cpu and a MSI 990XA-GD55 AM3+ ATX Motherboard.
I read on an overclocking guide that by using an OEM operating system then it is much harder to overclock but that is the only version of windows 7 i can find. I do not really want windows 8, i would much prefer windows 7 but i don't think they sell any new non-oem versions of windows 7 or at least not from what i have found.
If you go on Amazon, the only windows 7 i found was OEM versions but i don't know if that means they are made for dell, hp etc or if it is a legit version of windows 7. And another one i found was intended for system builders only but is still an OEM so i'm really confused.
So the question is, if i buy this windows 7 OEM will i have any problems on overclocking or accessing the BIOS etc?
These are the ones i'm looking at:
http://www.amazon.co.uk/...004Q0PT3I/

http://www.amazon.co.uk/...00H09BB16/

Any help will be much appreciated.

My keyboard keeps cutting out?

I have a lenovo keyboard, it's 3 years old and it keeps turning on and off, all the keys stop working and the lights on it will die, and then flash, and go back on. It started a couple days ago and wasn't so bad but it's gotten to the point where I can barely type because it keeps going out. I don't have money for a new keyboard. Is there anything I can do to fix it?

Best games whose runs on a 64mb or 128mb graphic card?

I'm looking out for suggestions of games which can be played on a 64mb or 128mb video card, games to run in my notebook. I have a Samsung RV411 CD1BR.
Here goes some specs:
*Microprocessor: Intel® Core™ i3 380M;
*OS: Windows XP;
*Intel® GMA HD (Integrated graphics memory)
*Ram: 2 GB DDR3
Any suggestion is welcome! Thanks a lot!

Added (1). No you didn't understand what I meant, I was talking about 'Old games', games like Tomb Raider, Max Payne I & II, Scarface, GTA III, VC, SA, etc… I'm talking about old games at all…

Dead space android game problem?

I have lenovo ideatab a1000 1gb ram mtk DC processor. I have installed apk files and copied game cache in sdcard/android/data but it says game need to download 495mb more.Other games like gta3 and pes 12 worked same way please help and in game description the game path is sdcard/android/data name of game is dead space and it is not a obb file

Android phone around rs. 15k?

Suggest me some HD Android around rs 15k

my preference is:

1. Support OTA updates *

2. Minimum 5mega pixel camera

3. Front camera support

4. Good range of service centers.

5. Nice battery backup. (around li -on 1700 mah or above )

Which is better-samsung core or samsung quattro(win)? I'm planning to buy a android phone?

I'm planning to buy a android phone.so i searched for many phones and shortlisted these two which is in budget… Galaxy core is good phn no doubt but i'm little tempted to big screens so i'm thinking for quattro but as i heard from people that this phn is facing sum performance issues.bcoz of this i'm confused to spend my money for this phn bt really want bigger screen otherwise core is the last option
so any of u here give me suggestions regarding this phone's feature and obviously performance
Quattro users comment will be preferred