I have mini dell and cannot open it , the message appear as , operating system not found and media test failure , please would you help me out with this

I've had one of these machines with the same message and I just change the HDD, reinstalled Windows and we're good to go.

check the Boot order in the BIOS and make sure that is isn't set to Boot from LAN or Network first as the error "PXE *** Media Test Failure" ( where *** refers to the NIC card ID )

does in fact refer to a pc that is trying to Boot from the LAN or Network first.

If your boot order is set to boot from your Hard Drive first then I would suspect a bad Hard Drive.

Reboot your computer.

This is necessary, as entering the BIOS utility requires that you be outside of your normal operating system.

Press the key indicated during the startup messages to enter the BIOS.

This is traditionally either the "Esc / Delete" or of the "F2" key, but it can be anything, so pay attention to the screen as your computer loads up.

Navigate through the BIOS menu screens, using the arrow keys navigate to advanced bios features press enter to which device has been set to boot from.

using the arrow keys load failsafe defaults or load optimized defaults this will change the boot order press escape then press f10 to save to cmos to restart

hope this helps

do wut it tells u, check cable

check your hdd. Load OS in it and check again for problem

Hi,

You computer is trying to boot from the LAN port (Ethernet).

Go into the BIOS by pressing either the F2 or the Del key. Check and make sure the hard drive is recognised by the system as with it saying "Operating system not found" does not sound good and could mean a hardware failure.

If it is seen by the BIOS check the boot order, change it to the HDD as the first boot device.




Regards.

media test failure like above while
booting means that the problem already solved as long as you can get
into Vista/win7/xp as usual. PXE shown in the massage is
the Ethernet network boot option which you’re not using. There are 4 options you can use for boot up the laptop:
1. Network
2. DVD/CD
3. USB Storage
4. HDD

That was better to use HDD unless you are connected to a LAN then you need to change it to Network

The issue might be with the laptop not being able to recognize the hard disk
Visit the below link for more information:
http://notebook-solutions.blogspot.com/2010/08/pxe-media-test-failure-error.html

Sounds like your hard drive died. If hard drive is dead you wont be able to get into anything but the bios. Hold down the CTRL key when computer starts and dont let go and try to force it into going into bios for you.

No; the message indicate absence of hard drive.
open the laptop and remove the hard drive and reinstall it.
if the message still appear then your hard drive is faulty.

Installing an operating system from one computer and inserting it into another computer will not work specially when they are from different manufacturers because the components in them are different.
The Windows install has to be done on the intended computer.
The media test failure error message refers to a faulty disk controller or a faulty hard disk.