Windows 10: After unmarking partition my computer doesn't boot.

The partition containing windows 10 was made "active" which was later unmark as guided by Sayan_Ghosh in his reply to BobBerndt dated February 6, 2016. After unmarking partition my computer doesn't boot, kindly guide what to do now

:)

 

unmark a partition as "active"

Hello Bob,

Thank you for posting your concern in Microsoft Community and welcome to the Windows 10 Family.

Please be informed that marking a partition as active on a basic disk means that the computer will use the loader (an operating system tool) on that partition to start the operating system. An active partition is a partition on a hard drive set as the bootable
partition that contains the operating system. So it is not advisable to configure anything related to boot partition.

Please follow the below steps to unmark the partition as active:

• 
  Open command prompt by pressing Windows key + X and selecting “Command prompt admin”.
  
• 
  Type in diskpart and press Enter.
  
• To identify which disk you need to work with. Type the command: list disk.
  
  This will list all the drives connected to your computer.
• 
  To select the disk enter the command: select disk n
  
  "n" will correspond to the disk # for the ssd you are referring to.
  
• 
  To list all the partitions on the disk enter the command:
  list partition
  
• 
  To select a partition use: select partition n
  
  Substitute "n" correctly and it will select the particular partitions on that drive.
  
• 
  To unmark the current partition as active use the command line:
  inactive
  
• 
  Exit the command prompt using command:
  exit
  
• 
  Reboot the system to let the changes happen.
  

Hope the above information is helpful. If you need further assistance, we would be happy to help you.

Thank you.

 

unmark a partition as "active"

After changing to active partition my computer doesn't boot so what can I do now?

 

hd6950 to hd 6970

ok
i ve tried everything:with atiflash from dos,winflash.step by step with bios powercolor hd 6970 from the database.
nothing,doesn´t work.any suggestion????