Ms-7826 Motherboard Manual Jun 2026
The MS-7826 (Kaili) is an OEM motherboard manufactured by MSI specifically for HP Envy and Phoenix desktop series. Because it is a proprietary board, there is no official standalone "User Manual" in the traditional sense; instead, documentation is provided through HP's system-level service guides. Core Hardware Specifications Supported Specifications Form Factor Micro-ATX (uATX) Chipset CPU Socket LGA 1150 (Socket H3) Memory 4 slots, Dual Channel DDR3 (1333/1600 MHz) Max RAM 32 GB (4 x 8GB Non-ECC DIMMs) Storage SATA III (6.0 Gb/s) and mSATA SSD slot Processor Compatibility The board is designed for 4th Generation Intel (Haswell) processors. Highest Officially Supported: Intel Core i7-4790 (84W). Known Compatibility: Intel Core i7-4770, i5-4570, and similar Haswell chips. Note on i7-4790K: While technically the same socket, the 4790K is an 88W part and may not be fully supported by the board's VRMs or BIOS. Expansion & Headers Looking for compatible GPUs for the MS-7826 - HP Community
, also known by its HP codename is a micro-ATX (uATX) motherboard manufactured by MSI for use in HP Envy and Phoenix desktop PCs. While a standalone retail manual is rarely provided by HP, the technical specifications below cover the essential details needed for upgrades and maintenance. Discount Computer Depot Core Specifications Form Factor: micro-ATX: 24.4 cm (9.6 inches) x 24.4 cm (9.6 inches). Intel Z87 (some versions may use Z97). Socket Type: LGA 1150 (Socket H3). Power Connectors: Standard 24-pin main power and 4-pin ATX 12V power. Discount Computer Depot Processor Support The board supports 4th generation Intel Core (Haswell) processors. It generally supports a TDP up to HP Support Community Compatible Series: Intel Core i3, i5, and i7 (4xxx and 5xxx series). Specific CPUs: Intel Core i7-4790, i7-4770. Intel Core i5-4670, i5-4570, i5-4440, i5-4430. The i7-4790K (88W) is technically compatible but may be throttled due to VRM limitations. HP Support Community Memory (RAM) Configuration DDR3 PC3-10600 (1333 MHz) or PC3-12800 (1600 MHz) Non-ECC. 4 total DIMM slots. Supports up to (8GB per slot). Architecture: Dual-channel. For optimal performance, install matching modules in pairs. cdn.prod.website-files.com Expansion and Storage HP ENVY Phoenix 810-100in Desktop PC Product Specifications
While HP and MSI do not typically publish a single "user manual" PDF for this proprietary OEM board, the following technical guide covers the essential information you would find in one for the MS-7826 (Kaili) motherboard. Core Specifications Manufacturer: MSI (OEM for HP) Form Factor: MicroATX (uATX) - Supported CPUs: 4th Generation Intel Core i3/i5/i7 (Haswell architecture) Memory (RAM) Support DDR3 PC3-10600 (1333MHz) or PC3-12800 (1600MHz) 4 DIMM slots Maximum Capacity: 32GB (4 x 8GB modules) Architecture: Dual-channel support Expansion & Storage 1 PCI Express x16 (Gen 3.0) 3 PCI Express x1 (Gen 2.0) 1 Half-length mini-card slot Multiple SATA 3.0 (6 Gb/s) ports for HDD/SSD and optical drives Front Panel Connector Pinout Because this is an OEM board, the front panel header can be non-standard. Generally, for the MS-7826: Power Switch: Pins 7 and 8 Power LED: Pins 2 and 4 (Polarity sensitive) Pins 1 and 3 (Polarity sensitive) Pin 6 is usually "missing" or the key pin to help orient the connector HP Support Community I/O Ports (Rear Panel) 1 HDMI, 1 DVI-I, 1 DVI-D 2 USB 2.0 and 4 USB 3.0 ports 6-channel (3 jacks) with Optical S/PDIF out Networking: 1 Ethernet (RJ-45) port Discount Computer Depot For official driver downloads and original desktop documentation, you can visit the HP Support Site and search for your specific HP Envy Phoenix model (e.g., 810-100 series). HP Support Community pinout diagram for a case swap? ms 7826 motherboard interconnections (wiring) - HP Community Your answers can be found at the HP Envy 700-074 User Guides or Product Page. http://support.hp.com/us-en/product/HP-ENVY-700-000- HP Support Community MS-7826 (Kaili) - HP Support Community - 5802340 The Power LED and the HDD LED pins are polarity sensitive. If the LEDs don't work then switch the wires between the two pins. HP Support Community
The MS-7826 motherboard , also known as the (Ver. 1.0) or (Ver. 2.0), is a custom micro-ATX (uATX) motherboard manufactured by MSI for use in high-end HP desktop systems like the HP ENVY Phoenix 810 and HP ENVY 700 series. Technical Specifications Overview The board is built on the Intel Z87 chipset and uses the LGA 1150 socket , making it compatible with 4th and 5th Generation Intel Core processors. Specification Manufacturer MSI (for HP) Form Factor uATX (24.4 cm x 24.4 cm) Chipset Socket Memory 4x DDR3 DIMM slots, max 32GB Expansion 1x PCIe x16 (Gen 3.0), 3x PCIe x1 (Gen 2.0), 1x mini card Power Standard 24-pin ATX & 4-pin/8-pin CPU power Processor and RAM Support CPU Compatibility : Supports Intel Core i3, i5, and i7 processors based on the Haswell and Broadwell architectures. Specific confirmed models include the Intel Core i7-4770 and i7-4790 . Memory Configuration : The board features four 240-pin slots supporting DDR3 PC3-10600 (1333MHz) and PC3-12800 (1600MHz) non-ECC unbuffered modules. While it supports 1600MHz RAM, some users report the BIOS may default to 1333MHz without XMP override options. Critical Installation and Wiring Details ms 7826 motherboard interconnections (wiring) - HP Community 12 Feb 2017 — MSI MS-7826 (Kaili) motherboard. http://support.hp.com/us-en/product/hp-envy-700-000-desktop-pc-series/5358989/document/c03748942. HP Support Community HP/MSI Kaili2 Motherboard User Manual Request ms-7826 motherboard manual
The MS-7826 motherboard , commonly referred to as the Kaili by HP, serves as a cornerstone for several performance-oriented desktop systems released during the mid-2010s. While it was manufactured by MSI, its distribution as an Original Equipment Manufacturer (OEM) component means that its "manual" is often a patchwork of technical specifications and service guides rather than a single retail booklet. Understanding this board requires looking at its architecture, its role in the Intel ecosystem, and the specific constraints inherent in OEM hardware. Architectural Foundation At its core, the MS-7826 is built on the Intel Z87 chipset , utilizing the LGA 1150 socket . This placement makes it compatible with 4th Generation Intel Core processors, known as the Haswell architecture. Because it uses the Z87 chipset, the board theoretically supports features like overclocking and advanced storage configurations, though HP’s proprietary BIOS often restricts these "enthusiast" tweaks to maintain system stability and thermal profiles within their pre-built chassis. Key Specifications and Connectivity The board follows a standard Micro-ATX form factor, making it versatile for various case sizes. Its manual specifications typically highlight the following: Memory: It features four DDR3 DIMM slots, supporting dual-channel configurations. It generally handles up to 32GB of RAM with speeds up to 1600 MHz. Expansion: The primary slot is a PCI Express x16 (Gen 3.0), intended for high-end graphics cards, accompanied by three PCI Express x1 slots for peripheral cards like Wi-Fi adapters or sound cards. Storage: The board includes multiple SATA 3.0 (6 Gb/s) ports, providing the necessary bandwidth for SSDs and high-capacity hard drives. The OEM Distinction The most critical aspect of the MS-7826 "manual" is understanding its identity as a Hewlett-Packard component. Unlike retail MSI boards, the MS-7826 features a customized BIOS and power delivery system . For example, the front panel headers—the pins that connect the case’s power button and LEDs—often follow an HP-specific layout rather than the standardized retail mapping. Users attempting to transplant this motherboard into a third-party case must often rely on community-created diagrams to correctly wire the interface. Furthermore, driver support and firmware updates are typically sourced from HP's support site rather than MSI’s. This creates a specialized ecosystem where the hardware is MSI-grade, but the "soul" of the board is governed by HP’s corporate standards for reliability and ease of mass assembly. Conclusion The MS-7826 (Kaili) represents a bridge between the enthusiast world and the pre-built market. It provides a robust platform for Haswell-era computing, offering the stability of the Z87 chipset in a compact form factor. While it lacks the flashy heat sinks and open BIOS of a retail gaming board, its documentation reveals a highly capable workhorse designed to squeeze maximum utility out of one of Intel’s most successful processor generations. For the modern hobbyist, the MS-7826 manual is less a book of instructions and more a map for navigating the unique intersection of custom manufacturing and standardized computing.
Write-Up: MS-7826 Motherboard Manual 1. Overview The MS-7826 is an OEM motherboard manufactured by MSI (Micro-Star International) primarily for HP and Compaq branded systems. It is most famously used in the HP Pavilion 500 series , HP Compaq Elite 8300 , and several All-in-One (AIO) PC models (e.g., HP Pavilion 21/23/27 AIO). Because this is an OEM board, MSI does NOT distribute a public manual to end users. Instead, the official documentation is embedded within HP’s support manuals , maintenance guides, and service reference guides. 2. Key Specifications
Form Factor: Custom (often Mini-ITX or proprietary AIO shape, not standard retail). Chipset: Typically Intel H61 (for Sandy/Ivy Bridge CPUs) or H81 (for Haswell). CPU Socket: LGA 1155 or LGA 1150 (depends on revision – verify via board label). RAM: 2 × DDR3 DIMM slots, max 16GB, 1333/1600 MHz (non-ECC). Expansion: 1 × PCIe x16, 1 × PCIe x1 (some versions lack these in AIO systems). Storage: 2 × SATA 3Gb/s or 6Gb/s (varies), often one SATA power header near the edge. Rear I/O: PS/2 combo, VGA, HDMI (AIO models), 4× USB 2.0, 2× USB 3.0 (if chipset supports), RJ-45 Ethernet (Realtek RTL8111 series), 3× audio jacks. Power: 19V DC input (AIO models) or standard 24-pin ATX + 4-pin CPU (desktop towers). The MS-7826 (Kaili) is an OEM motherboard manufactured
3. Where to Find the Manual Since MSI does not host the manual directly, use the following sources: | Source | Best for | |--------|-----------| | HP Support (official) | Enter your specific HP model number (e.g., HP Pavilion 500-023w). Download “Maintenance and Service Guide” – contains motherboard layout, jumper settings, BIOS recovery, and power pinouts. | | ManualsLib or Manualslib.com | Search “MS-7826 motherboard manual” – user-uploaded OEM guides. | | Elektrotanya | Schematics and repair guides (advanced users). | | Wayback Machine | Archived MSI OEM pages (rare but possible). |
⚠️ Important: Do not confuse this with MSI’s retail boards (e.g., B75MA-P31). The MS-7826 has no retail equivalent.
4. Typical Contents of the Official HP Service Guide If you locate the correct HP manual, expect these sections directly relevant to the MS-7826: Highest Officially Supported: Intel Core i7-4790 (84W)
Motherboard layout diagram – clear callouts for CMOS battery (CR2032), front panel header (JFP1), USB headers, fan connectors, and SATA ports. Jumper settings – especially CMOS clear jumper (JBAT1) and BIOS recovery jumper . BIOS setup guide – key combos (usually F10 for BIOS, F11 for boot menu), BIOS update procedure via USB. Error beep codes – e.g., long-short-short for memory failure. Power connector pinout – critical if using the board outside its original case. Supported CPU/RAM list – tested HP-approved parts.
5. Common Troubleshooting (From Manual Insights) | Symptom | Likely Fix from Manual | |---------|------------------------| | No POST, fan spins | Clear CMOS (JBAT1 short for 10s). | | Continuous long beeps | Unseated or faulty RAM – clean slots, test one stick at a time. | | USB ports dead after storm | Check F_USB1 fuse (near header) – manual shows location. | | Power button does nothing | Verify front panel header pinout (Power SW pins are often pins 6 & 8 on JFP1). | | BIOS corrupted | HP recovery method: Win+B or Win+V at power-on with BIOS USB drive. | 6. BIOS & Firmware Notes