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2 Posts
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38
May 4th, 2025 17:43
Controller error on disk
I have recently seen a recurrent error I'm unable to diagnose. "The driver detected a controller error on \Device\Harddisk2\DR2." I have a Samsung 980 evo installed, but using CHDSK and Samsung Magician, neither reports a problem with the SSD. The SSD resides on Disk 0. Computer management does not show a Harddisk2 or DR2 (and I have also seen DR4 with the same message.) There are no external USB storage devices attached. The error occurs randomly through the day. I'm assuming this is some kind of virtual device but I don't understand the error.
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teapat
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2 Posts
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May 4th, 2025 17:44
I should add this is an Inspiron 7415 2-in-1
anne_droid
3 Apprentice
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663 Posts
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May 5th, 2025 11:06
Hi
The internet reports...
A Windows system error indicating a communication or hardware problem with the drive identified as Harddisk2 (which could be an internal, external, or RAID disk)
. Common causes include:
Failing or defective disk (especially in RAID setups, where the RAID controller may not detect a problem until total failure)
Faulty or loose cables connecting the drive
Issues with the disk controller or motherboard
Problems with external drives, such as USB HDDs going to sleep and not responding quickly enough
What to do:
Back up your important data immediately, as the disk may be close to failure
Check and, if needed, replace cables connecting the drive
Run hardware diagnostics (on Dell systems, tap F12 at boot for diagnostics)
Update your BIOS and disk drivers
If the drive is external, try a different USB port or cable
Run CHKDSK to check for disk errors, but only after backing up data, as this can stress a failing disk
If the error persists after these steps, the drive may need to be replaced
I think it is likely a Main Board issue, but I could be wrong.