Cause: Known issue with NVIDIA chipset drivers on Windows 7/8. Fix: Disable "USB Selective Suspend" in Windows Power Options. There is no fix in the Pegatron manual because HP never addressed it.
| Feature | Details | |---------|---------| | Form Factor | Micro-ATX | | CPU Socket | AM2+ (supports AM2 CPUs like Athlon 64 X2, Phenom) | | RAM | 4 x DDR2 DIMMs (max 16GB, PC2-6400) | | Chipset | NVIDIA GeForce 9100 / nForce 720a | | Expansion | 1x PCIe x16, 2x PCIe x1, 1x PCI | | Rear I/O | VGA, HDMI, 6x USB 2.0, Audio (6-jack), LAN |
As an OEM board, the BIOS is branded with HP/Compaq logos. It is generally locked down compared to retail boards.
You searched for the "Pegatron motherboard M2N78LA manual top" because you either want to fix a vintage PC or you found this board in an e-waste pile. Here is the honest verdict: pegatron motherboard m2n78la manual top
Final Manual Pro-Tip: Print this article and tape it inside your PC case. Because the metal shielding on HP cases often covers the silkscreen labels on the motherboard, you will never find the jumper locations without a guide.
If you have a specific question about a revision of this board (e.g., M2N78-LA Violet vs. M2N78-LA Banana), check the white sticker near the CPU socket. The "SP#" number (e.g., SP-123456) is the actual HP part number. Search that, not "Pegatron."
Good luck with your retro computing project. You now have the top manual. Cause: Known issue with NVIDIA chipset drivers on
Here is the direct link to the Pegatron M2N78-LA manual (often referred to as the HP OEM motherboard, codenamed "Narra" or "Narra3").
Since Pegatron typically manufactures motherboards for HP/Compaq, the manual is hosted on HP's support site under their model numbers.
Direct Download Link (HP Support): HP Pegatron M2N78-LA Motherboard Manual (Product Number: 5189-1187) Final Manual Pro-Tip: Print this article and tape
(If the link above does not work, search HP's website for "HP Pavilion p6000 series manual" or "Compaq Presario SR5000 series manual" — these use the M2N78-LA.)
The M2N78LA uses an American Megatrends (AMI) BIOS, skinned by HP. To enter BIOS, press F10 repeatedly during boot (not Delete, as many manuals suggest).
Important Note: Pegatron is an OEM manufacturer (they make boards for HP, Compaq, Asus, etc.). There is no standalone retail manual from Pegatron for the M2N78LA. This board is almost exclusively found inside pre-built computers, most commonly the HP Pavilion p6000 series and Compaq Presario CQ5000 series.
However, you can access the official HP maintenance and service guide that contains the exact motherboard layout, BIOS settings, jumper settings, and troubleshooting for the M2N78LA.