Windows 7 reinstall or format?

[Protest]

Hello.

I have original windows 7 on this computer. Apparently the code has worn off and i cant read it.

This computer is getting really slow, there are some bad programs which i cant delete like yadex (DO NOT go to the site).
Anyway i want to make a clean re-install or format to that computer, i have backed up already most important programs, pictures etc.

The question is, how i can do it?

 

[ss202sl]

When you re-install it, you have an option to format it. When it asks where to install, go to advanced, and delete all the partitions on the OS drive, and then install to the OS drive, and it will create a new partition and format it for you.

 

[ste_wilko]

You will need to buy a new licence for Windows (whichever you put on) unless you have the recovery disc for the machine.

Have you tried cleaning it up via Safe Mode?

 

[SuperAdithya]

ss202sl is right. And for the key, download belarc advisor from here: http://www.belarc.com/free_download.html install the program. Then A dialog box will appear, CLICK CONTINUE. THEN an administrator/uac prompt will appear, press yes. then again a dialog box will appear, press no and wait. After that a page will open in your web browser. In the left are in that page, there will be a column 'In-page links'. in that column click on Software Licenses. Then you can find your keys of all your software (office, windows, etc.)

 

[ste_wilko]

Just remember that the PC might be running an OEM version of Windows, which will not work on retail versions of the software

 

[SuperAdithya]

Oh, man! I forgot! Thanks for reminding! I was in the thinking that a retail version is installed

 

[ste_wilko]

Oh, man! I forgot! Thanks for reminding! I was in the thinking that a retail version is installed

Could well be, but judging by the OP's lack of knowledge on how to install Windows I'm guessing the PC came from a retailer (I could be massively wrong of course)