This one is very common and I have tried everything in the world but unable to succeed. Task Manager in my Win XP PRO SP2 has been grayed out for sometime and I have tried scanning the PC but no use. I have also tried going to the registry and editing the following entry but it does not allow it:
This is currently set to 1 and hence the problem but I am unable to delete the entry to change it. The error I get while doing it is: 'cannot edit disabletaskmgr: error writing the value's new contents'
Also tried going GPEDIT and tried setting the Remove Task Manager option to Not Configured as well as Disabled under User Configuration->Administrative Templates->System->Ctrl+Alt+Del options but no use.
Used McAfee, Spybot, MalwareBytes Anti-Malware but no use.
I want to boot into safe mode and scan the PC but am unable to do so as everytime I try to boot in safe mode by choosing Safe Mode it reboots again and shows me the same Safe Mode options again.
Any tips would help.