The default value is for BootExecute is autocheck autochk *. When you use the /x switch, it will add a /k parameter prior to the asterisk. The /k parameter excludes volumes from being checked for the presence of a dirty bit.
Else
You can try the more Advance option below.
Note : Changing registry settings can be risky and may reduce your OS non-bootable
In the Run tab type: regedit
* Under the HKEY_LOCAL_MACHINE subtree, expand to: