Boot Order Changed: Corrupted MBR?

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Doogals

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Dec 5, 2014
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After installing a new GPU card in my Windows 10 system, somehow the boot order got changed in my BIOS and the system tried to boot from my secondary storage drive.

After correcting them boot order, Windows can see but not access my secondary drive. Is it possible the MBR on the storage drive was corrupted when it tried to boot as a system drive?

Boot time is very slow now, and each time the system boots it tries to scan and repair the storage drive.

Any advice would be much appreciated, thanks.
 
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terry4536

terry4536

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Mar 28, 2010
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That is a different story. If a drive in the boot order isn't seen by the BIOS (for any reason), it will drop out of the boot order. First check the data and power cable to the drive. If the drive can be seen by the BIOS but not windows, then open Disc Management. Is it drive in question listed? If so is it listed as allocated?
 
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Doogals

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More Updates:
- Disk Management hangs while trying to connect to the virtual disk service.
- CHKDSK found no problems with the drive.
- Drive is visible in file manager but not accessible.
 
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Doogals

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Motherboard: ASRock Q1900M
RAM: 8GB (2X4GB) G.SKILL DDR3
GPU: XFX Radeon HD 5450
SSD (OS): Samsung 850 EVO 250GB 2.5”
HDD (Storage): WD Blue 1TB 3.5” (WD10EZEX)
SATA PCIe Controller: Syba SD-SA2PEX-2IR
Power Supply: Antec VP 450
Blu-ray Drive: LG WH14NS40
OS: Windows 10 64-Bit

Should also mention the the SSD and HDD are both connected directly to the motherboard, and the PCIe SATA controller card is only used for connecting the Blu-ray drive.
 
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terry4536

terry4536

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So the Samsung SSD is the problem drive. Does the BIOS detect the Samsung SSD? Does the SSD have data that can't be replaced?

Have you ran one of the linked diagnostics yet?

Make sure that the SATA Data and Power cables are connected.

Try detecting new devices.
 
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terry4536

terry4536

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If all of those fail. Do a hard boot and open then Disk Management. Is the Samsung SSD detected. What is the status of the drive?

Here is a video on Disc Management. It covers formatting, allocating, and partitioning.

https://www.howtogeek.com/school/using-windows-admin-tools-like-a-pro/lesson4/
 
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Doogals

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Thanks for the suggestions, however the Samsung SSD is working correctly, the issue is the 1TB WD drive used for storage. It is visible but cannot be accessed from file explorer, and I’m not able to check disk management as it hangs while trying to connect to the virtual disk service.

Not sure if an issue like this would be BIOS related?
 
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terry4536

terry4536

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Mar 28, 2010
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I guess I got confused because you said the boot times were slow now. I thought you were talking about the SSD.

Can you run Western Digital Data Lifeguard Diagnostic?

https://support.wdc.com/downloads.aspx?p=3

Much of the above suggestions apply still. Make sure that the SATA power and data cables are secure. Try a different SATA port on the motherboard.

Are you logged in as the same user when it was last accessible? Have you tried accessing the drive as an administrator?


Assuming that it passes the diagnostic but it is still not accessible, the next step is to fix the drive so that it can be used again (if possible).

I would suggest reformatting the drive. This time use Disc Management to reformat and partition the drive.
I would recommend NFTS and GPT with a single partition (to keep it simple).

Here is an article on doing that.
https://www.howtogeek.com/317762/how-to-erase-and-format-a-drive-in-windows/
 
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