Windows vista prompt "You must be logged in with administrator privilege..."

I have windows vista x64 ultimate. I 've been trying to run a BIOS update program for my HP laptop but unsuccessful. It keeps prompting me "You must be logged in with administrator privilege in order to update the system BIOS..." I am an advanced user and I am positive to my best knowledge I am logged in as an admin.
- I logged in using the built-in admin account (yes it was disable by default but I enabled it and logged in using it)
- I tried "Run as administrator"
- I tried to change the exe properties > compatibilities to "Run as administrator"
NONE WORKED. I am out of tricks and ready to award 500p to expert who can help me solve this

I got a workaround (use old win XP)...but still want to know why !!!
Cee VeeAsked:
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Michael PfisterCommented:
I'd guess its a bug in HPs BIOS update software. Maybe its not able to install/activate a required driver to flash the BIOS. Any events logged in the event log? (Its just a guess, because I have no similar system here to test...)
Would be interesting to see if its working under Vista 32-bit...
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Ryan_RIT Systems AdministratorCommented:
can you login as administrator?

r/click my comp - manage
local users and groups > users
dbl click Adminstators
untick 'account is disabled'
it'll now apear in Welcome screen
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KenneniahCommented:
Vista in general and 64bit especially is much more security conscious about allowing programs to access hardware. I wouldn't say it's a bug, but most likely the BIOS update program will need to be updated for Vista. Especially in Vista 64 which doesn't allow any unsigned drivers period (and some bios update programs do temporaily load a driver to access the bios).
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daiowenCommented:
This is likely caused by Vista's UAC (User account control). In brief it reduces any admin accounts normal operating status to a normal user unless UAC is triggered to elevate the permissions.

The best option is either to find an updated version of the flasher or to find an alternative way of flashing. Most flash applications have a DOS based version. Use an old Win98 CD to boot from and then either use another cd or a floppy containing the DOS based flash application to flash.
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Ryan_RIT Systems AdministratorCommented:
thanks canvo
what was the outcome?
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Cee VeeAuthor Commented:
--> Ryan_R : none of the comments here actually helped me solve the mystery

I begin to believe that it must be the bios update program may not be compatible with Windows Vista and I have to time to reverse engineer or debugging it.
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Ryan_RIT Systems AdministratorCommented:
my only other suggestion would be to try 32bit Vista
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Ryan_RIT Systems AdministratorCommented:
...as others above have pointed towards   :)
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Anti-MhzCommented:
extract the software with an archiving software, i recommend 7-zip, treat it like you would an archive file
and then locate the exe and run the bios flash that way

i had the same problem
peace
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