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Compaq SR1750NX says I am not an administrator

I am reinstalling the OS on a Compaq Presario SR1750NX that one of our techs bought from Ebay. It came without the OS and no factory software, neithere OS or drivers CD. I purchased a copy of MS Windows XP Home edition from an internet site and it installed fine. When I went into the Device Manager I noticed that 3 Unknown devices had yellow question marks next to them. There were labeled as Multimedia audio controller, SM Bus Controller and Unknown device. I deleted them and restarted the PC, but when it discovered the new hardware, I could not find the drivers on the PC. I then went to Compaq website let it scan the PC and downloaded the PC tools application which stated that it would aid me in troubleshooting the PC. When I went to run it, it said that I was not logged in as an administrator and ended the install. There is only one user and it is the admin. I even tried to do the install in Safe Mode where the 'Admin' login appeared on the login screen, no good. I created a new login with admin rights and still no good.

Why won't this PC let me install the apps when I am the admin? Does a compaq PC 'need' to have their own software restored on their PCs via a restore disc? or should I be able to use the version that I purchased from the internet store with was an OEM version?

thanks in advance.

ASKER CERTIFIED SOLUTION

McKnife

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jfeemster

If you haven't done the Windows updates, I'd do that. I'd also check to see if there is a bios update.

RSchierer

ASKER

Right on the money. I reinstalled the OS and not only did the 'I am not the admin' error disappear, but the OS installed itself on the C: drive rather then the H: drive, which I also thought was perculiar.