Solved help to reinstall the windows 7 in a laptop

[novacounter]

hello
i have a lenovo g570 laptop
it have a recovery software on it as well (one key rescue)
but because i make some change in my HDD partition size it been lost

yesterday my laptop just get too slow,then i restarted it
and then windows repair tool come up,and after spending 1 hure it could't find the problem and from that time i just can't log in in in windows and a a blue error page will come up
my laptop have a one key rescue option witch means you can recover you data during in boot and windows too(it have a special key for it)but it doesn't works too
so it seems there is no way left for me

so i want to format the Hdd and reinstall the windows 7
but i don't have any disk because when i receive my laptop it didn't had any disc with it
so:
1-what i should do if i need to install again windows 7?i should buy a new or i can use the one that come with my laptop?
if yes,can i download and burn it to the disc and then give the key that is under my laptop?

 

[Golden]

Follow this:
http://www.sevenforums.com/tutorials/219487-clean-reinstall-factory-oem-windows-7-a.html

 

[ignatzatsonic]

Yes, you can reuse the Product Key to activate a new installation.

Download your exact version from this link:

Official Windows 7 SP1 ISO from Digital River « My Digital Life

It's an ISO file. Burn it to a disc and install from it.

This will provide a "clean install" and will not include whatever special software Lenovo may have included.

I'd go to the Lenovo website first and download the LAN (network) driver so you know you will be able to establish an Internet connection after you do the install.

 

[novacounter]

do i need to buy windows?

 

[ignatzatsonic]

No, you do not need to buy anything other than a blank DVD to burn the ISO.

 

[novacounter]

exellent
thank a lot

 

[novacounter]

Yes, you can reuse the Product Key to activate a new installation.

Download your exact version from this link:

Official Windows 7 SP1 ISO from Digital River « My Digital Life

It's an ISO file. Burn it to a disc and install from it.

This will provide a "clean install" and will not include whatever special software Lenovo may have included.

I'd go to the Lenovo website first and download the LAN (network) driver so you know you will be able to establish an Internet connection after you do the install.

i have a windows seven disc but it is too old (2009)
is it ant difference?

 

[ignatzatsonic]

The old Windows disk probably does not include Service Pack 1, but it should work if the disk is for the same edition of Windows 7 as your Product Key on the sticker on the laptop.

The ISO does include Service Pack 1.

I'd use the ISO because you won't have to separately install Service Pack 1.

 

[novacounter]

thanks