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HP Pavilion p7-1047c Desktop PC Troubleshooting

Motherboard Specifications, (Carmel)

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Figure 1: The Carmel motherboard
Photograph of motherboard
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  • Manufacturer's motherboard name: Pegatron
  • HP/Compaq name: Carmel
  • uATX: 24.4 cm (9.6 inches) x 24.4 cm (9.6 inches)
  • Intel H61
  • Up to 2.5 GT/s
  • Socket type: LGA 1155
  • Motherboard supports the following processor upgrades
    • Core i7-2600S 65W
    • Core i5-2xxx 65W
    • Core i3-2xxx 65W
  • Single channel memory architecture
  • Two 240-pin DDR3 DIMM sockets
  • Supports DDR3 DIMMs
    • PC3 8500 (1066 MHz)
    • PC3 10600 (1333 MHz)
  • Non-ECC memory only, unbuffered
  • Supports 1 GB, 2 GB, and 4 GB DIMMs
  • Supports up to 4 GB on 32-bit* systems
  • Supports up to 8 GB on 64-bit systems
NOTE:32-bit systems cannot address a full 4.0 GB of memory
*Integrated video is not available if a graphics card is installed.
  • Supports PCI Express x16 graphics cards
  • VGA out port
*Integrated audio is not available if a sound card is installed.
  • Built-in High Definition 6 channel audio
  • Audio jack sensing
  • Realtek ALC656 CODEC
  • Interface: Integrated into motherboard
  • Technology: RTL8171EH-CG gigabit ethernet controller
  • Data transfer speeds: up to 10/100/1000 Mb/s
  • Transmission standards: 1000-Base-T Ethernet
  • One PCI Express x16
  • Three PCI Express x1
  • One PCI Express Mini Card x1
Figure 2: Back I/O panel
  1. USB: 4
  2. LAN
  3. DVI-D
  4. D-SUB port (VGA port)
  5. Audio: Line in
  6. Audio: Line out
  7. Audio: Microphone
  • 1x ATX power connector
  • 1x ATX CPU power connector
  • 1x CPU fan connector
  • 1x System fan connector
  • 4x SATA connectors
  • 10x USB connectors
  • 1x Internal SPDIF output connector
  • 1x Front panel audio connector
  • 1x ROM recovery connector
  • 1x Hood_sense connector
  • 1x One touch reset connector
  • 1x One touch recovery connector
  • 1x Front panel connector
Figure 3: layout
CAUTION: Do not change any jumper setting while the computer is on. Damage to the motherboard can result.
This motherboard has a jumper to clear the Real Time Clock (RTC) RAM in CMOS.
  1. Turn OFF the computer and unplug the power cord.
  2. Move the jumper to clear for 5 to 10 secs, then move the jumper back to default.
  3. Plug the power cord and turn ON the computer.
  4. On the next startup, enter BIOS setup to re-enter user settings.
The BIOS password is used to protect BIOS settings from unwanted changes.
To erase the BIOS password follow these steps:
  1. Turn OFF the computer.
  2. Move the jumper to Clear.
  3. Turn ON the computer to POST screen.
  4. Turn OFF the computer.
  5. Move the jumper to Default.
  6. Enter BIOS setup to verify or configure new settings.