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Windows 7: "media test failure check cable" after bios update - Dell Optiplex 780

02 Jan 2018   #1
Sylveon Fetish

Windows 7 Ultimate 64-bit SP1
"media test failure check cable" after bios update - Dell Optiplex 780

After I flashed a bios update on my mother's new Dell Optiplex 780, identical to mine, during which I was installing drivers and such,

every time it boots up, it always says " *media test failure check cable* "

but unlike what I find on Google, the computer then just boots up like normal—as if there was no error at all.

All the results on Google pertain to the computer being unable to boot. This is not the case for my mother's PC. Just an annoyance that could freak her out.

Not sure if this is related or helpful, but before installation of the OS, I changed the boot order of her PC (even before updating bios). It is now
1. CD rom
2. USB
3. Network
3. Hard Drive

Because I was always told to have the hard drive as the last thing in the boot list.

The CD rom and every other thing with cables works, so it is obviously not a cable issue.

My System SpecsSystem Spec
02 Jan 2018   #2

Windows 10 64 bit

The "POST" (Power on Self Test) is apparently generating that error.

I've always seen the hard drive (boot drive) as the first boot device. I build my own desktops and the default in the BIOS' is always the hard drive.

This is what the Dell manual states about the boot order:
"Specifies the order in which the computer attempts to find an operating system from the devices specified in this list".

With the CD Rom as the first device and no disc in the drive it would seem logical to get the error you are getting.
My System SpecsSystem Spec

 "media test failure check cable" after bios update - Dell Optiplex 780

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