Controlled by an independent synchronous buck PWM controller step-down circuit, generating +1.5V for the DDR3 DIMM modules and +0.75V VTT termination voltage.
: Community-verified BIOS bin files and microcode updates (including LGA 771 to 775 mods) can be found on specialist forums like Bios-Mods .
Since OEM PDFs are rare, here is where the community has verified the most accurate data:
LGA 775 (Socket T), supporting Intel Core 2 Quad, Core 2 Duo, Pentium, and Celeron processors. Two slots supporting up to (HP spec) or potentially (chipset spec) of DDR3 1066/1333 MHz RAM. Form Factor: MicroATX (uATX). Technical Resources
To tailor this guide further, let me know what specific issue you are experiencing with the board: hig41uatx rev 11 schematic verified
A "verified" schematic means that the documentation has been tested against a physical board to ensure that the layout, net names, and component values (resistors, capacitors, ICs) are accurate.
This log underscores that the problem is often not the CPU or RAM, but a tiny, inexpensive regulator IC that has failed.
Based on verified community repair logs (specifically from Chinafix and Elektroda), the primary schematic gaps for this Rev 1.1 board involve the and the PCIe bus traces . The board uses a 24-pin ATX + 4-pin CPU power arrangement with distinct voltage regulation modules (VRMs) for Vcore, Vtt, and Vdimm.
Locate the step-down circuit responsible for the FSB termination voltage. A shorted filtering ceramic capacitor in this area frequently pulls this rail to ground. Controlled by an independent synchronous buck PWM controller
When analyzing the board, use the schematic to identify SMD components: Integrated Circuits (PWM, SIO, Audio, LAN). Prefix Q: MOSFETs/Transistors. Prefix R/C: Resistors/Capacitors. Prefix L: Inductors/Coils.
Do you need help identifying a or tracing a particular rail like memory or CPU? Share public link
Using the schematic (often labeled under Foxconn's internal designation for this board), focus on these sections:
: He desoldered the faulty component and replaced it with a high-temp alternative. When he flicked the bench supply switch, the board didn't just hum; it roared to life. The diagnostic LEDs cycled through their sequence and settled on a steady, triumphant green. Two slots supporting up to (HP spec) or
When troubleshooting a dead or unstable HIG41UATX Rev 1.1 board, technicians utilizing the verified schematic should focus on these common failure points: No Power (No Fans, No Lights)
The HP H-IG41-uATX Rev 1.1 Go to product viewer dialog for this item.
HP H-IG41-uATX (Rev 1.1) , manufactured by , is a micro-ATX motherboard commonly used in HP and Compaq desktop PCs like the Compaq 500B