thanks for your reply. when i bought i had windows7 home basic installed and now is it possible to install premium now?

And i did not find homebasic here

http://www.mydigitallife.info/download-windows-7-iso-official-32-bit-and-64-bit-direct-download-links/

Download the corresponding edition of Windows 7 you have a license for from the following link. You can identify the edition on COA sticker attached to your machine, with at bottom or battery compartment (laptop) or top/side if its a desktop computer.

• Seller approves return and return is completed. Youtube belajar muqaddam. • Seller receives and checks returned product.

COA Certificate of Authenticity:

What is the Windows Certificate of Authenticity?

•Windows 7 Home Premium (x86) - 32 bit

•Windows 7 Home Premium (x64) - 64 bit

•Windows 7 Professional (x86) - 32 bit

•Windows 7 Professional (x64) - 64 bit

•Windows 7 Ultimate (x86)* - 32 bit

•Windows 7 Ultimate (x64)* - 64 bit

32 vs 64 bit

Is my PC running the 32-bit or 64-bit version of Windows?

ImgBurn - In addtion to supporting the creation of CD's from .ISO files,
it supports a wide range of other image file formats, and it's free.
(BIN, CUE, DI, DVD, GI, IMG, MDS, NRG, PDI and ISO)
http://www.imgburn.com/

Note: Always use the slowest burn speed (4x or 2x) if offered a choice.

If you wish to reinstall Windows 7 Home Basic:

Tools you will need for this task:

• eicfg_removal_utility.zip – is a simple tool that will remove the ei.cfg from any Windows ISO disc image, thereby converting the image into a “universal disc” that will prompt the user to select an edition during setup. It’s a free download here
• Genuine Retail Windows 7 64 bit Installation DVD – this will be used to reinstall Windows 7 Starter 32 bit, any retail edition of Windows 7 32 bit will do, this includes Home Premium, Professional or Ultimate, doesn’t matter if its upgrade or full version. You cannot use a 64 bit DVD because there is no 64 bit version of Windows 7 Starter. You will need to create an image of the disc, please refer to our Notebooks.com tutorial about how to create a digital backup of your software here

After you have created the image of the Windows 7 64 bit DVD, we will edit the image and remove the ei.cfg file so we can reveal all editions of Windows 7 during the installation and select Windows 7 Home Basic. Lets take a look at doing it step by step.

After downloading the eicfg removal utility, you need to extract it, since its in a .zip file. Just right click it and click Extract All.

Double click the eicfg_remover.exe file to launch it.

Browse to where the Windows 7 Image (.ISO file) is stored, select it and click Open.

That’s it! the ei.cfg file is now removed. The next step now is to reinstall Windows 7 Home Basic.

Burn it to a blank DVD

ImgBurn - In addtion to supporting the creation of CD's from .ISO files,
it supports a wide range of other image file formats, and it's free.
(BIN, CUE, DI, DVD, GI, IMG, MDS, NRG, PDI and ISO)
http://www.imgburn.com/

Note: Always use the slowest burn speed (4x or 2x) if offered a choice.

Download 64 bit Windows 7 ISO:

•Windows 7 Ultimate (x64)* - 64 bit

That’s it!

Check out our Notebooks.com article: How To Load BIOS and Change Boot Configuration

Windows 7 will boot as it normally does into the setup environment, the only difference this time is, you will be given a choice to select the edition of Windows 7 you want to reinstall.

Select Windows 7 Home Basic and proceed with the installation as normal. I suggest that you create a backup once the installation is complete.