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HP Pavilion 491.uk Desktop PC support

Motherboard Specifications, VI31 (Berlin)

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Motherboard Description
  • Manufacturer's name - FIC VI31
  • HP/Compaq name - Berlin
Motherboard SupplierFIC
System BIOS SupplierFIC/Award
Form FactoruATX
Processor BrandIntel
Processor Socket TypemPGA478 (Socket-478)
Processor FamilyPentium(R) 4,

(Northwood, Willamette)
Maximum Processor Core Frequency>=2.4GHz Northwood,

2.0GHz Willamette
Proc. Front Side Bus Freq.400MHz
Chipset NameSiS650
Chipset "North Bridge" & RevisionA1
Chipset "South Bridge" & Revision961- A2
Super I/OITE- IT8705F
Flash BIOS Device2Mb Flash
Memory TypeDDR
Memory SpeedPC2100/PC1600
Memory Sockets2 DIMM
Maximum Memory2GB
256Mbit Memory SupportYes
Graphics SupplierSiS
Graphics ConfigurationDown, In Chipset
Onboard Graphics MemoryUMA, up to 64MB
Graphics Connector (AGP)AGP 4X
TV-Out DeviceSiS301B
TV-Out ConfigurationAGP Tvout card
Audio ConfigurationAC'97 Down
AC'97 CODEC DeviceRealtek ALC201A
Audio Jacks (legend below)M,LI,LO,MIDI/Game
LILine In
LOLine out
CD-In Jack2
Internal Spkr-Out/Line-Out/Headphone-Out HeaderSpeaker out header
Ethernet 10/100 LAN SupplierRealtek RTL8100(B)L
Ethernet ConfigurationDown
IDE UDMA ModesATA-100/66/33
Expansion Slots (AGP/PCI/Exten)AGP, 3 PCI
USB SpecificationUSB 1.1
USB Ports (Front)2
USB Ports (Rear)2
Serial, Parallel, Floppy, PS2 Kbd &Mouse1S, 1P, 1F, PS2 K+M
Serial Port Front Chassis OptionNo
Fan Headers (CPU, System, PowerSupply)CPU, System
Available Mfg Options (legend below)-GAS, TV out
AAudio down on motherboard
CExternal L2 cache on motherboard
E 1394 on motherboard
GGraphics down (on motherboard or in chipset)
LLAN on motherboard (ethernet)P - PCMCIA slot
SS3 power management support
TTV-out on motherboard
UGraphics card (up, not on motherboard)
WMicrosoft(R) Windows XP hardware compliant
Figure 1: Layout
Figure 2: Photograph
Figure 3: Backplate
1 - Mouse
2 - USB
3 - Parallel
4 - Gameport
5 - Microphone
6 - Line-in
7 - Line-out
8 - VGA
9 - Serial
10 - Keyboard

Clearing the CMOS settings

The Clear RTC RAM (3-pin CLR_CMOS) jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. It also allows clearing of date, time, and system setup parameter memories in CMOS, by erasing the RTC RAM data. The onboard button cell battery powers the RAM data in CMOS, including system setup.
  1. Turn off the PC and unplug the power cord.
  2. Move the CLR_CMOS jumper cap (see layout view to locate CLR_CMOS jumper) from pins 1-2 (normal) to pins 2-3 (clear CMOS).
  3. Keep the CLR_CMOS jumper cap on pins 2-3 for 5 to 10 seconds, then move it back to pins 1-2.
  4. Plug in the power cord and turn on the PC.
  5. Enter the BIOS setup to change BIOS settings.

Clearing the BIOS password

The BIOS password protects the BIOS from undesired changes. If password checking is enabled, and you need to disable it, use the following steps:
  1. Turn off the PC and unplug the power cord.
  2. Move the CLR_PASSWORD jumper cap from pins 1-2 to pins 2-3 to enter BIOS setup without a password.
  3. To enter BIOS setup, start the PC and press the F1 key as the PC boots.
  4. Clear or reset the BIOS password.
  5. Save the BIOS settings and turn off the PC.
  6. Return the CLR_PASSWORD jumper cap to pins 1-2.
HP Pavilion 491.uk Desktop PC

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