NDD / CHKDSK does not run after restart -after bho_project.bho_object (Trojan.BHO) removal

bho_project.bho_object (Trojan.BHO) was detected and removed from my computer. Now ChkDsk /r NOR Norton NDD will not execute after XP SP3 restart. Both of these disk repair tools require exclusive use of my C: drive. autocheck autochk /p \??\C: autocheck autochk has been set but neither tools will execute. How can I fix this problem and get my hard disk check for problems?  Norton Speed disk and MS XP defrag does work. <removed>

 

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