Did you try "Run as Administrator"?

-CyberIT-,

Besides running it as an Administrator, you may want to try running it in safe mode - it is entirely possible that some sort of antivirus/antimalware or other security software is blocking it.    Also, make sure you are running the 64bit version of the BIOS update tool, as a 32bit version wouldn't be able to run if it needed to load a driver.


Brielle

I ran it as ADMIN and still received the same error message.

I downloaded the update from DELLs website ... I didnt see one for x86 or x64.  I selected BIOS from their driver download area and that is all I was able to get.

Im wondering if I need to format, install a x86 OS, run the update and then format and install the x64 OS.  What Im trying to do is install VMs on this machine and I cant install a x64 VM because of a VT issue.  Im hoping the latest BIOS update has the VT capability for me to do so.

Whether the PC is VT capable usually depends on the CPU, and if the bios doesn't show VT as an option then the CPU may not be VT capable.  Also, swerver 2008 has a lot of behind the scene security restrictions that are difficult to work around.  The easiest method to upgrade the BIOS would be to use a floppy 3.5 disk and boot from it, if that is an available option.  The 64-bit OS should be able to run a 32 bit program without issue, so i don't think you will need to reinstall anything.  The big thing to check first is whether the CPU is capable of VT.  What CPU does the box have and is the floppy disk upgrade an option for you?

Processor:  Intel P4 ... 3.4GHz HT

I was reading online about the Optiplex 620 that with an updated version of the BIOS it gave the ability to enable/disable VT.  However, not sure if the source is reliable but updating the BIOS cant hurt anything.

This machine does not have a floppy to boot to.  If I can create a bootable CD or bootable USB drive that would be great.  Any info on getting that done?

I would follow the steps detailed here:

http://www.howtodothings.com/automotive/how-to-create-a-dos-boot-cd

Before writing the CD you would need to download the bios and copy the exe file over to the CD as well.  At that point you should be able to burn the CD, and then boot from it.  Once you boot from it you should get a DOS prompt at which point you would just type the name of the EXE file and the bios update should start.

The latest bios is located here along with notes on running it in a DOS (non-windows) environment:

http://support.dell.com/support/downloads/download.aspx?c=us&cs=2684&l=en&s=pub&releaseid=R142230&SystemID=PLX_GX620&servicetag=&os=WNET&osl=en&deviceid=162&devlib=0&typecnt=0&vercnt=8&catid=-1&impid=-1&formatcnt=0&libid=1&typeid=-1&dateid=-1&formatid=-1&source=-1&fileid=189785

Thanks!  I got the info of the processor in the GX620 that I have and it does not support VT at all.  I can swap out the processor with a different one that does support VT though.

Great, so you should be able to create the boot CD and add the Bios update to it, and update the BIOS if your still wanting to do that.  

Judging from the specs for the Gx620, it can take any of the upper P4 CPU's including the 2 that support VT, and even the lower end Pentium D dual core processors so you should be good to go once you get it upgraded.  The spec sheet can be found here:

http://www.dell.com/downloads/global/products/optix/en/spec_optix_gx520-gx620_en.pdf

If you haven't got a problem that is addressed by a BIOS update, I recommend not doing it.  If the BIOS update is absolutely required, confirm that nobody is reporting problems with it.

Dell has at least one BIOS update that invalidates the system's factory supplied configuration, causing the system to state "Incompatible CPU" at startup, then shut down.  This causes a situation where the system can't boot to undo the problem.  (Those Dell guys, what comedians!)  The only way to re-flash to a previous workable BIOS is to buy and install an older, lower-performance CPU.  Despite this, the BIOS in question is still available from Dell as a recommended update.  So thoroughly research, and do that research off the Dell web site before you flash.

The BIOS update would have done nothing for me because the processor doesnt support VT. I was able to get a different machine that has a processor that supports VT.