I did the fix and I have rebooted successfully:
MBRCheck, version 1.2.3
(c) 2010, AD
Command-line:
Windows Version: Windows 7 Home Premium Edition
Windows Information: (build 7600), 64-bit
Base Board Manufacturer: Quanta
BIOS Manufacturer: Hewlett-Packard
System Manufacturer: Hewlett-Packard
System Product Name: HP Pavilion dv6 Notebook PC
Logical Drives Mask: 0x0000001c
\\.\C: --> \\.\PhysicalDrive0 at offset 0x00000000`0c800000 (NTFS)
\\.\D: --> \\.\PhysicalDrive0 at offset 0x00000071`3fe00000 (NTFS)
Size Device Name MBR Status
--------------------------------------------
465 GB \\.\PhysicalDrive0 Unknown MBR code
SHA1: 263078AC856058B74BD330CBEEF0EB1B30D826B5
Found non-standard or infected MBR.
Enter 'Y' and hit ENTER for more options, or 'N' to exit: y
Options:
[1] Dump the MBR of a physical disk to file.
[2] Restore the MBR of a physical disk with a standard boot code.
[3] Exit.
Enter your choice: 2
Enter the physical disk number to fix (0-99, -1 to cancel): 0
Available MBR codes:
[ 0] Default (Windows 7)
[ 1] Windows XP
[ 2] Windows Server 2003
[ 3] Windows Vista
[ 4] Windows 2008
[ 5] Windows 7
[-1] Cancel
Please select the MBR code to write to this drive: 5
Do you want to fix the MBR code? Type 'YES' and hit ENTER to continue: yes
Successfully wrote new MBR code!
Please reboot your computer to complete the fix.
Done!
Press ENTER to exit...
