partition repair-- startup repair failed: Error code= 0x490
System Disk= \Device\Hard disk 0
window directory=
auto chk run=0
number of root causes=1
then it runs tests and then it says
root cause found
No OS files found on disk
Repair action: Partition table repair
Result: failed Error code= 0x490
time taken= 13276ms
So what now?
Please and thank you
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a. In the command prompt, change the location to c: and then type chkdsk /r and press Enter.
Note 1: Answer Y when chkdsk asks you if you want to check the drive next time Windows boots (restarts).
Note 2: /r = The /r switch tells chkdsk to attempt to recover any bad sectors of the hard drive if any are found. A bad sector is a spot on the hard drive that cannot hold saved data anymore. If you’ve any data on that sector, you’ll lose that.
Method 2: Rebuild BCD using the Bootrec.exe tool.
To run the Bootrec.exe tool, you must start Windows RE. To do this, follow these steps:
a. Put the Windows Vista or Windows 7 installation disc in the disc drive, and then start the computer.
b. Press a key when you are prompted. Select a language, a time, a currency, a keyboard or an input method, and then click
Next.
c. Click Repair your computer.
d. Click the operating system that you want to repair, and then click Next.
e. In the System Recovery Options dialog box, click
Command Prompt.
f. Type Bootrec.exe, and then press ENTER.
Refer the following link for more information:
How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows
http://support.microsoft.com/kb/927392
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What happens when you boot the computer using the recovery disc?
How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows
http://support.microsoft.com/kb/927392
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