Access is denied. [0x80070005]

Hi frnds,

I am having a SQL 2005 instance on win2003 server.

SQL Server 2005, Standard Edition with SP1
Windows Server 2003, Standard Edition with SP1

2 days back, all services went down and I was not able to see anything in logs,how they went down? I restarted all the SQL Services again thru services.msc but when I am trying to open 'SQL Server Configuration Manager'.... .I am getting this error...

Cannot connect to WMI provider.You do not have permission or the server is unreachable. Note that you can only manage SQL Server 2005 servers with SQL Server Configuration Manager.
Access is denied. [0x80070005]

I googled and got some good links about this error...
1 - http://www.sql- server-performan ce.com/faq/ sqlviewfaq. aspx?faqid= 296

2 - http://forums. microsoft. com/MSDN/ ShowPost. aspx?PostID= 142375&SiteID= 1

3 - http://www.ocforums .com/showthread. php?t=482307

I followed but didn't get success...has someone faced this issue and resolved also plz guide me......

And one more thing......sql services are running on this machine 'A' but Start, Stop, Pause, Resume and Restart option are not highlighted on this instance. I connected one another instance 'B' on this machine and got same issue (options were not highlighted) but when I opened that perticular machine where that instance 'B' is installed, i was able to see all option runable so i registered that instance 'A' on 'B' machine and got here also I was not able to see these option highlighted only for 'A'...

Please help me....a lot of thanks to all of you...

Thanks & Regards,
Mohd Rizwan

frnds...

finally I got success to resolve my issue.....first I run this command thru command prompt....

secedit /configure /cfg %windir%\repair\secsetup.inf /db secsetup.sdb /verbose

then re-started the windows and then run this command from command prompt....

C:\Program Files\Microsoft SQL Server\90\Shared>mofcomp "C:\Program Files\Microsoft SQL Server\90\Shared\sqlmgmproviderxpsp2up.mof"

I got this idea thru this link..
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1721211&SiteID=1

Thanks you.........

Rizwan................