Windows 7 wont startup

[king64]

Hi,i'm having an problem with my 7 OS,because it wont startup correctly,yerstday i did an defrag on the system and let him shuttdown automaticly after this, but this morning i was unable to start the same, because the letter drive of 7 was moved from F to G but the system reserved stays on F like before where the OS was also F,i tried through system recovery but without sucess and many other possible solutions to startup but i got no results to this problem untill now,my question is,does somebody know how can i solve this issue,i'm using now vista,is possible if i change the letter drive from G to F will solve this or not?i let you an picture from the OS ob the computer panel,Thanks to all in advance.

 

[Tews]

How to change drive letters tutorial -=> Here

Hope this helps

 

[king64]

How to change drive letters tutorial -=> Here

Hope this helps

Thanks for your help,but i've tried this a few minutes ago and got no results because when i want to change the drive letter ,the letter F don't existes anymore because is located on SYSTEM RESERVED{F} i get more letters but not F,and i dont now why i cannot change to F.

 

[draceena]

You would need to first change the System Reserved drive letter to something not in use (like say Drive J) and then you can assign the Windows 7 to Drive F