Post error: BIOS not supporting boot device

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MattB2013

Honorable
Dec 12, 2013
4
0
10,510
All,
I have an Asus P8Z77V Pro/Thunderbolt motherboard with an NVIDIA 660TI video card.

This rig has been working without issue for almost a year. Unfortunately, the last few days I've been unable to boot into the machine. When booting, my computer prompts "The current BIOS setting do not fully support the boot device. Click OK to enter the BIOS setup. Go to Advanced/Boot/CSM Parameters, and adjust the CSM (Compatibility Support Module) settings to enable the boot device.

I have a Samsung 840 SSD. This has worked without issue for about a year. Now, however, I can't boot into Windows, nor can I get into the BIOS to fix this CSM issue.

Any idea how to fix the issue, or what might be the cause? Does it sound like a SSD problem, or a motherboard issue, or something else?

I'm using the latest firmware for my BIOS.

Thanks!
 
Solution
tiny voices
I doubt this is the motherboard. Put a windows disk in the DVD drive and boot to it. If you can get past the BIOS screen booting to a DVD/USB/other HDD, the SSd is bad NOT the motherboard.
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MattB2013

Honorable
Dec 12, 2013
4
0
10,510
Nope. However, what I noticed now is that when I try to access the BIOS, the hardware time has been reset and there are no longer any bootable devices, including my DVD player. None of the devices plugged into the SATA ports on the motherboard seem to be working.
 
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MattB2013

Honorable
Dec 12, 2013
4
0
10,510
I went out and bought a new Intel SSD. After I unplugged all my SATA hard drives from the motherboard and plugged in just my DVD player and new SSD, the motherboard detected it right away. I was able to install Windows onto the new hard drive, but on the first boot (immediately following installation, never made it to Windows), the Boot_device_led is on. It turns on almost immediately. I am unable to access the BIOS.

Interestingly, if I unplug the hard drive, I'm able to get into my BIOS.

Motherboard screwed up?
 
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Thilagarajan

Reputable
Aug 29, 2014
9
0
4,510

Hi matt,
Did you find the solution?? I'm [strike][strike][/strike][/strike] facing this issue now..
 
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lmokoena7

Prominent
Nov 6, 2017
1
0
510
I had this problem. What worked for me was swapping sata cable on the motherboard to a different one and I used a new cable.
I use:

Asus PBZ77-V
i7 3770 cpu
16GB RAM
GTX1070 x2

The machine its just a render node.
 
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