Why does my Acer Aspire TC-780 say '4th Master Hard Disk Error'?
- TTravis ReedAug 28, 2025
This message indicates that the IDE/ATAPI device configured as Master in the 4th IDE controller could not be properly initialized by the BIOS.

Why does my Acer Aspire TC-780 say '4th Master Hard Disk Error'?
This message indicates that the IDE/ATAPI device configured as Master in the 4th IDE controller could not be properly initialized by the BIOS.
What does 'PCI ROM conflict' mean on my Acer Desktop?
A PCI adapter generated an I/O resource conflict when configured by BIOS POST.
Why does my Acer Desktop say '5th Master Hard Disk Error'?
This message indicates that the IDE/ATAPI device configured as Master in the 5th IDE controller could not be properly initialized by the BIOS.
Why does my Acer Aspire TC-780 say '5th Slave Hard Disk Error'?
This message indicates that the IDE/ATAPI device configured as Slave in the 5th IDE controller could not be properly initialized by the BIOS.
Why does my Acer Desktop say '6th Master Hard Disk Error'?
This message indicates that the IDE/ATAPI device configured as Master in the 6th IDE controller could not be properly initialized by the BIOS.
What does 'Password check failed' mean on my Acer Aspire TC-780 Desktop?
The password entered does not match the password set in the setup.
What does 'Resource Conflict' mean on my Acer Aspire TC-780 Desktop?
More than one system device is trying to use the same non-shareable resources (Memory or I/O).
What does 'S.M.A.R.T. Capable but Command Failed' mean on my Acer Aspire TC-780 Desktop?
The BIOS tried to send a S.M.A.R.T. message to a hard disk, but the command transaction failed.
What does 'Drive Not Ready' mean on my Acer Aspire TC-780 Desktop?
The BIOS was unable to access the drive because it indicated it was not ready for data transfer. This is often reported by drives when no media is present.
What does 'A: Drive Error' mean on my Acer Aspire TC-780 Desktop?
This may be due to a bad cable or faulty diskette drive. The BIOS attempted to configure the A: drive during POST, but was unable to properly configure the device.
| Bus type | DMI3 |
|---|---|
| Stepping | B0 |
| Tjunction | 100 °C |
| Processor cache | 6 MB |
| Processor cores | 4 |
| Processor model | i5-7400 |
| System bus rate | 8 GT/s |
| Processor family | Intel® Core™ i5 |
| Processor series | Intel Core i5-7400 Desktop Series |
| Processor socket | LGA 1151 (Socket H4) |
| Processor codename | Kaby Lake |
| Number of QPI links | 0 |
| Processor frequency | 3 GHz |
| Processor cache type | Smart Cache |
| Processor lithography | 14 nm |
| Processor manufacturer | Intel |
| PCI Express slots version | 3.0 |
| Processor boost frequency | 3.5 GHz |
| Processor operating modes | 64-bit |
| ECC supported by processor | No |
| PCI Express configurations | 1x16, 1x8+2x4, 2x8 |
| Thermal Design Power (TDP) | 65 W |
| Number of processors installed | 1 |
| Maximum number of PCI Express lanes | 16 |
| Memory types supported by processor | DDR3L-SDRAM, DDR4-SDRAM |
| Memory voltage supported by processor | 1.35 V |
| Memory clock speeds supported by processor | 1333, 1600, 2133, 2400 MHz |
| Maximum internal memory supported by processor | 64 GB |
| Internal memory | 8 GB |
| Memory channels | Dual-channel |
| Memory clock speed | 2133 MHz |
| Internal memory type | DDR4-SDRAM |
| Maximum internal memory | 32 GB |
| HDD speed | 7200 RPM |
| HDD capacity | 1000 GB |
| SSD capacity | 128 GB |
| HDD interface | SATA III |
| SSD interface | The type of interface(s) with which the Solid State Drive is connected to other hardware. |
| Storage media | HDD+SSD |
| Optical drive type | DVD Super Multi |
| Card reader integrated | Yes |
| Total storage capacity | 1128 GB |
| Compatible memory cards | SD |
| On-board graphics card ID | 5912 |
| Discrete graphics card model | NVIDIA® GeForce® GT 730 |
| On-board graphics card model | Intel® HD Graphics 630 |
| Discrete graphics card memory | 2 GB |
| On-board graphics card OpenGL version | 4.4 |
| On-board graphics card base frequency | 350 MHz |
| On-board graphics card DirectX version | 12.0 |
| On-board graphics card dynamic frequency (max) | 1000 MHz |
| Number of displays supported (on-board graphics) | 3 |
| Wi-Fi standards | Wi-Fi 5 (802.11ac) |
| Ethernet LAN data rates | 10, 100, 1000 Mbit/s |
| USB 2.0 ports quantity | USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them. |
| Chassis type | Desktop |
| Product color | Black |
| Product type | PC |
| Motherboard chipset | Intel® H110 |
| Power supply | 220 W |
| Certification | BSMI CB CCC CE FCC |
| Sustainability certificates | RoHS |
| Scalability | 1S |
| Processor code | SR32W |
| Processor ARK ID | 97147 |
| Processor package size | 37.5 x 37.5 mm |
| Supported instruction sets | AVX 2.0, SSE4.1, SSE4.2 |
| Thermal solution specification | PCG 2015C |
| Intel Identity Protection Technology version | 1.00 |
| Intel Stable Image Platform Program (SIPP) version | 0.00 |
| Depth | 425.5 mm |
|---|---|
| Width | 175 mm |
| Height | 381.4 mm |
| Weight | - g |
Details the system's core components, including CPU, memory, and I/O.
Outlines the physical dimensions, weight, and form factor of the computer.
Provides detailed technical specifications for all hardware components like CPU, memory, storage.
Guide to configuring system settings via the BIOS setup interface.
Steps to recover the system BIOS if it becomes corrupted or damaged.
Instructions for updating the system's BIOS firmware using DOS flash utility.
Step-by-step guide for taking apart the computer system for maintenance.
Step-by-step guide for putting the computer system back together after maintenance.
Procedures for diagnosing hardware issues and identifying faulty components.
Explains common POST error messages and their potential causes.
Methodology for isolating and resolving issues not covered by specific error messages.
Visual representation of the computer's core subsystems and their connections.
Identifies major components and connectors on the mainboard.
Visual breakdown of the computer showing component placement and assembly.
Comprehensive list of parts that can be replaced in the field.
List of vendors and components tested for compatibility with the system.











