Open WMI fail?

Hi,comp has become very slow of late,and following message constantly on. "Open WMI fail! Please re-install the RAID package,Then Hot-Plug function can use normally after re-installing it".Have spent most of day googling for answers with no joy!any and all help really appreciated,Thanks.
 
To fix the networking issue as well as the server execution error, follow these steps:

Right click 'Computer'
Click 'Manage'
Under the 'System Tools' section, double click 'Local Users And Groups'
Click 'Groups'
Right click 'Administrators'
Click 'Add to group'
Click 'Add'
Click 'Advanced'
Click 'Find Now'
Double click 'Local Service'
Click 'Ok'
'NT AuthorityLocal Service' should show up in the list now
Click 'Ok'
Close computer management and reboot
 
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