Coventry Data Recovery – Coventry’s No.1 Dell Data Recovery Specialists

With 25 years of professional data recovery expertise, Coventry Data Recovery is the trusted service provider for Dell desktop and laptop recovery solutions. Whether you’re a home user or a business client, our engineers specialise in resolving complex disk-level faults such as partition corruption, file system damage, and mechanical failure. We have successfully recovered data from thousands of Dell Dimension systems and other Dell product lines.


Common Dell Drive Fault: “The Parameter Is Incorrect”

Technical Explanation:

This error often indicates corruption within the partition table or a damaged Master Boot Record (MBR). The error typically appears when attempting to access the drive via File Explorer or Command Prompt, rendering the data unreadable. Causes include:

  • Abrupt shutdowns or power failures
  • Faulty SATA/IDE cable connections
  • Malware or ransomware activity
  • Bad sectors in critical disk regions
  • Improper disk cloning or partition resizing

Technical Recovery Process for “The Parameter Is Incorrect” Error

Step 1: Hardware Diagnostics

We begin by connecting the affected Dell drive to a dedicated forensic workstation using write-blockers. This prevents any further corruption or overwrites. We inspect:

  • Drive health and SMART diagnostics
  • Interface stability (SATA/PATA)
  • Sector accessibility and error mapping

Step 2: Imaging the Drive

Using hardware-based disk imagers, we clone the entire drive at sector level—even unstable or slow-reading areas—into a secure working image. This ensures your original drive remains untouched during recovery attempts.

Step 3: Partition Table and MBR Repair

We analyse the disk’s partition structure:

  • If MBR is corrupted, we use hexadecimal sector editors to manually rebuild it based on signature sector data.
  • If GPT (GUID Partition Table) is used, we restore backup headers or reconstruct partition entries.
  • We apply logical rebuild techniques to restore file system structures like NTFS boot sectors or FAT tables.

Step 4: File System Analysis and Data Extraction

We scan the restored image using specialist recovery software capable of parsing corrupted metadata:

  • NTFS Master File Table (MFT) reconstruction
  • Cross-checking file index entries against bitmap allocation
  • Carving out fragmented files from unallocated space

Step 5: Data Verification and Transfer

Recovered files are validated through checksum comparisons or manual inspection to confirm integrity. Data is then transferred to a new portable drive provided to the client.


Supported Dell Systems

We recover from all Dell hardware including:

  • Dell Dimension series (e.g. 3000, 4600, 8300)
  • Dell OptiPlex desktops
  • Dell XPS desktops and laptops
  • Dell Inspiron models
  • Dell Latitude business laptops
  • Dell Vostro & Precision workstations
  • Dell EMC storage systems (for RAID environments)

Supported Interfaces

  • SATA (Serial ATA)
  • PATA / IDE
  • M.2 NVMe and SATA SSDs
  • USB 2.0 / 3.0 external drives
  • PCIe SSDs in Dell laptops
  • eSATA and FireWire connections

File Systems We Recover From

  • NTFS
  • FAT32 / exFAT
  • ReFS
  • HFS+ (for Boot Camp-enabled Dell Macs)
  • ext3/ext4 (for Linux-based Dell workstations)

Why Choose Coventry Data Recovery?

  • 25 Years of Proven Recovery Expertise
  • Cleanroom Facilities
  • Free No-Obligation Diagnostics
  • RAID and SSD Specialists
  • Fast Turnaround and Secure Handling of Data
  • UK-Based Engineers Using Industry-Leading Tools

Typical Dell Data Recovery Issues We Resolve

  1. “Parameter Is Incorrect” Error
  2. Drive Not Detected in BIOS
  3. Unallocated Drive Space
  4. Accidentally Deleted Partitions
  5. File System Reports as RAW
  6. “Operating System Not Found” on Boot
  7. Blue Screen of Death (BSOD) with I/O Errors
  8. BitLocker Drive Lockout (no key)
  9. Disk Showing as 0 Bytes
  10. “Access is Denied” Permissions Fault
  11. Corrupt NTFS Master File Table
  12. Repartitioned or Reformatted Disk
  13. Sector-Level Media Degradation
  14. Overwritten Boot Sector or EFI Partition
  15. Failed Windows Update Leading to Boot Loop