As it is a custom build I will use another tool to take a peek at the mbr
[*] Download RogueKiller and save it on your desktop.
NOTE: If using IE8 or better Smartscreen Filter will need to be disabled
[*]Quit all programs
[*] Start RogueKiller.exe.
[*] Wait until Prescan has finished …
[*] Click on Scan
https://dl.dropbox.com/u/73555776/RKScan.GIF
[]Wait for the end of the scan.
[] The report has been created on the desktop.
[*]Attach that report