Solved Asus desktop Computer always boots into BIOS first

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taxihuyenbi

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Thanks for your interesting. I set my first boot priority is HDD in BIOS but after being shut down for 1 hour, the pc startup repeats that problem: booting into BIOS, HDD is not listed there!
 

taxihuyenbi

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As far as I known, when I shut the PC down for 1 hour, the electricity power will be cut off totally from the motherboard, when I press the power button to turn the pc on, the BIOS will runs the POST process:

https://whatis.techtarget.com/definition/POST-Power-On-Self-Test

and it always fails to find the HDD to boot so it goes to BIOS like that. But at that moment, when I press the Reset button

https://en.wikipedia.org/wiki/Reset_button

windows would start normally!

So the point here is: why the first POST fails? Something is wrong with that first scan?
 

phillpower2

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Download and run CrystalDisk info standard edition from here

Run the program, grab any screenshots and attach to your next reply for us.

To capture and post a screenshot;

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Screenshot instructions are provided to assist those that may read this topic but are not yet aware of the “how to”.
 

Bruce

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Oct 8, 2017
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Yeppoon, QLD, Australia.
since it isn't detecting the hard drive, chances are it thinks it is faulty.
try changing from the SATA3G ports to a SATA6G port (the same as the DVD unit).
failing that, remove the hard drive and try it in another PC (spare one in the house?, neighbour, friend, work) or put it into an external enclosure.
if it is detected, great, recovery your data while you can and check the drives SMART values and even run a chkdsk scan on the drive

old old is the drive?
why not take the opportunity to upgrade to a solid state drive?
 
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taxihuyenbi

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Sep 25, 2020
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Yesterday I did an experiment: connecting that HDD to another healthy windows 10 PC and pressed the power button, the BIOS couldn’t find any bootable device, so the HDD is the culprit here.

I reinstalled windows 10 home 64 bit from a DVD on that HDD to make sure it’s a clean installation. I shut down the PC and waited for 1 hour and pressed the power button: boot into BIOS again and the HDD was not on the Boot menu!

I opened cmd and run diskpart then list disk as other guys said, there I found that the HDD is MBR, but my Asus motherboard is UEFI (Asus H81M-R), so I tried to convert the HDD to GPT.

Then I go to BIOS setting and reset it to Default – save – exit.

I am shutting the pc down for 1 hour then turning it on again to see if it works and let you know the result. Thanks for all help.
 

taxihuyenbi

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I found the cause: my Seagate HDD is faulty. I replaced it with a Western Digital HDD and the symptom has gone. Thank you for your help.
 

Bruce

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Oct 8, 2017
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Yeppoon, QLD, Australia.
awesome on the PC front. :)
but sad on the drive front - means you've lost any data you may want.
if there is something important on it, you could try putting it into an external enclosure and connecting it vis USB and see if Windows detects it.

and if you weren't already - start having a backup regime in place!
 
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