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Windows 7: Boot device not found on occasion

06 Jun 2018   #1
F22 Simpilot

Windows 7 Ultimate x64
 
 
Boot device not found on occasion

My parents have a Dell Optiplex something or other, I think it's a 750. They had a platter for a HDD, and I upgraded it to a SSD. For the most part it works, but every now and then when you power on the computer BIOS says there is no boot device or something like that. You have to power down, wait like 1 minute and then power on. That typically resolves the issue. I have ran sfc /scannow and did a repair install with a Windows 7 disk. Still have the same issue. I cloned from the platter to the SSD with AOMEI Backupper. I've used AOMEI before many times and it worked. There is no malware. I scanned the computer with many anti-malware programs up to and including Herdprotect and Stream Armor as well as Malwarebytes and SuperAntiSpyware. I have Bitdefender Free installed and they use Sandboxie for the browser. I even used a few live anti-virus CDs and nothing found. So that ain't it.

OS is Windows 7 64 Home.

Could it be a PSU issue? I did reconnect the SATA power cable and made sure it was tight. For awhile that seemed to have solved the problem, but that may be a coincidence. And like I said, this issue is very random.


My System SpecsSystem Spec
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06 Jun 2018   #2
iko22

Windows 7 x64, Vista x64, 8.1 smartphone
 
 

If your getting no boot device when there is then id start by presuming there was a problem with the SATA controller or SATA electricals. Do you have an other SATA devices connected to the motherboard?
What happens if you restart the computer, does the computer restart by finding the boot device?
My System SpecsSystem Spec
06 Jun 2018   #3
Megahertz07

Windows 7 HP 64
 
 

What did you do with the HDD? Is it still on the computer?
What you described happens if the HDD is still marked as Active, that is, has a MBR but no OS. Open disk management (C:\Windows\System32\diskmgmt.msc), go to the HDD and mark it as Not Active.

On BIOS set the SSD disk as fist boot option and all others as Disabled.
My System SpecsSystem Spec
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06 Jun 2018   #4
F22 Simpilot

Windows 7 Ultimate x64
 
 

No other SATA devices except I think the DVD drive might also be SATA. I believe the SSD is first boot device in BIOS, but I'll double check.

Like I said, restarting the computer withen a minute often fixes this. This doesn't happen all the time. It's every once in a while.

The SSD is the only HDD in the computer and is the main drive.
My System SpecsSystem Spec
07 Jun 2018   #5
iko22

Windows 7 x64, Vista x64, 8.1 smartphone
 
 

It is a difficult problem because it does not happen that often. If it happened all the time you could start to be more conclusive about what actually happened during boot time.
But, as it is you are left with a range of "might be" possible solutions to your occasional problem. Some of the solutions appear easy to implement, but dont seem to give much headway, then there are the harder solutions that are more weighty but also more conclusive.
EASY: Move SSD to eSATA or different SATA port; Keep DVD port far away from SSD port; replace SSD with new SSD; make sure SATA cable is 6 Gb/s cable; connect device to a different power supply rail.
HARD: Replace integrated Disk Controller with a peripheral card. Replace Power Supply.
I have suposed that the computer has some stray storage element causing the occassional problem.
My System SpecsSystem Spec
07 Jun 2018   #6
F22 Simpilot

Windows 7 Ultimate x64
 
 

My mom has noticed an oddity, but might be a coincidence in that if she presses and holds the power on button instead of just hitting the power on button, the computer starts normally without a no boot device found error. Like I said, this may be a coincidence and don't see how this would be a factor. After all, just taping the power button would send the signal to turn on regardless of how long you hold it, correct?
My System SpecsSystem Spec
07 Jun 2018   #7
iko22

Windows 7 x64, Vista x64, 8.1 smartphone
 
 

Do you suppose it a coincidence that the CPU, RAM, fans and graphics card are unaffected during boot and power switching? They seem pretty invariant in you description of the problem.

I would experiment with the SATA power cabling like I suggested earlier, and see if that makes the oddity more or less pronounced. Tapping the Power Button does not produce a full ON signal on my computer case. I have to press the button until it rides over a click then it stays on. Otherwise pressing the button halfway causes the computer to just glitches ON momentarily and then powers OFF when I let go.
My System SpecsSystem Spec
13 Aug 2018   #8
F22 Simpilot

Windows 7 Ultimate x64
 
 

Well, I finally replaced the hard drive and it seems to have worked. Thus far there's no indication of no boot device found. Been going strong now for about a week.
My System SpecsSystem Spec
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 Boot device not found on occasion




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