guys i fking hate bsod
wasted 2 hours trying to find a solution
posting this cause u dont
if the above two commands dont work try this
Fix: Win7 keep on go into StartupRepair / boot manager failed to find os loader
Solution:
To run the Bootrec.exe tool, you must start Windows RE (Window Recovery Console). To do this, follow these steps:
Put the Windows Vista or Windows 7 installation disc in the disc drive, and then start the computer.
Press a key when you are prompted.
Select a language, a time, a currency, a keyboard or an input method, and then clickNext.
Click Repair your computer.
Click the operating system that you want to repair, and then click Next.
In the System Recovery Options dialog box, click Command Prompt.
Type Bootrec.exe, and then press ENTER.
Bootrec.exe options
The Bootrec.exe tool supports the following options. Use the option that is appropriate for your situation.
Note: If rebuilding the BCD does not resolve the startup issue, you can export and delete the BCD, and then run this option again. By doing this, you make sure that the BCD is completely rebuilt. To do this, type the following commands at the Windows RE command prompt:
bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd
for more info goto this site: http://itweirdo.blogspot.in/2012/04/fix-win7-keep-on-go-into-startuprepair.html