Startup Repair not working

Hello! I'm new to this forums, and first of all i'll apologize for my english, because i'm from Chile and i speak spanish :)

Well, the problem is that yesterday my notebook didn't boot well. (OS: windows 7 home premium x64) and started the "startup repair" thing. No problem with that at all...

But... the startup repair was unable to repair/fix the issue.
It said something like this: "startup repair couldn't repair blablabla", and when i clicked on "details" it showed a list of things without errors.

And at the last, it said something like this:
Principal problem: the OS is not compatible with the startup repair program.

Then it says restart or cancel (anyway, both of them restart the pc) and when it is starting again, it opens the startup repair... AGAIN, so ... its like an endless startup repair without any repair.

BUT, startup repair gives other ways of repairing, like:

- Restore from backup ( wich i cant use cause i dont have any backup )
- Memorytest ( used it, the memory is okay )
- command prompt thing. ( this one is the one i think i should use for repairing my notebook)

*The thing is that I dont want to lose information.

So, is there anyway to restore or fix-repair my problem (¿boot problem?) using the command prompt thing without loosing any data (documents, photos, music, programs, etc) ?

and again... sorry if i don't speak english perfectly, if you didn't understand something, just tell me, and i'll try to explain it.

* I'm not using my computer right now, i'm on a ciber ( don't now if you use the word "ciber" to describe a place where you pay for using a pc ).
** I'll go to my house and wright all the results of the startup recovery, so you can see it.

Thank you very much!

EDIT: This are the results literally:

Name of the issue with problem: StartupRepairOffline

Problem signs:
01: 0.0.0.0
02: 6.1.7600.16385
03: unknown
04: 28
05: Autofailover
06: 1
07: OsVersionMismatch

SO Version: 6.1.7600.2.0.0.256.1
Regional ID configuration: 3082

--------------------------------------------

Details of diagnosis and repairment:

Numbers of tries of reparation: 1

Session details:
System disc = /Device/Harddisk0
Windows Directory = C:/Windows
Automatic checkout: 0
Number of main causes: 1

Test realized: here it shows a list of 6 tests (Search for updates, system disc test, disc error diagnosis, disc metadata, operative system of destiny test and volume contain comprobation) all showing Results = Completed correctly and ErrorCode= 0x0

And at last is says:

Main cause finded: "the OS version is not compatible with StartUpRepair"