Window 7 harddisk preventing start up need help to repair!!!!

i was updating it while i accidently hit the power source button in the back which i thought no problem rebooting but it suddenly prevent it from starting up so i ran the startup repair and it told me to either contact your system admin or compter manufacturer to determine if you need to repair or replace the disk

here is the error message i just need to know if i have to replace it or i can repair it myself

Startup Repair disgnosis and repaid log
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Number of repair attempts: 2

Session details
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System Dusk = \Device\Harddisk0
Window directory = D:\Windows
AutoChk Run= 0
Number of root causes = 1

Test Performed:
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Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test preformed:
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Name: Disk failure diagnosis
Result: Completed successfully. Error code 0x0
Time taken = 375 ms

Root cause found:
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Badhard dusk:

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SodaDrop
Did you try the SFC /SCANNOW?

SFC /SCANNOW Command - System File Checker[2]=Performance Maintenance
Or the checkdisk?
Disk Check[2]=Performance Maintenance

i dont know how to do that

Soda
In the two mentioned sites there is a tutorial on how to do each function.

i did both but the disk scan wont work because i cant get into safe mode or anything when i turn on my pc it tells me to either go to startup repair of start winows normally. I cant start it normally, it just send me back to the startup repair and startup repair cant fix the problem either i was wondering if their a way to delete the whole harddrive or something and start all over or i just jave to bring it to someone to fix it which im trying to stay under budget

What specifically happened when you entered the command "sfc /scannow" from an elevated command prompt as Hanna 1 asked you to do?

it says system repair pending which requies reboot to complete. Restart Windows and run sfc again. Ive done it 5 times and it say the say thing over and over again

If sfc /scannow is finding errors each time you run it, I would continue to run it until it found no errors.

Post a screenshot of what you see on screen after running sfc /scannow.

if its repeating to say restart is their a way i can just restart it thru the command prompt? Ive done restarted it at the system recovery option many times now and it still comes up the samething

If you cannot successfully run a startup repair, the simplest thing to do may be a fresh installation.

Do you have a valid Windows 7 Product Key?