Compaq Presario B1200 Windows XP Driver

Install both Windows Installer and .Netframework first.

Windows Installer 3.1
Size : 2.5 MB Windows Installer-KB893803-v2-x86.exe
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Microsoft .Net Framework 2.0
Size: 22.4 MB  (requirement to install HP quick launch button)
Download

Chipset
Intel Chipset Installation Utility for ICH8
size: 1.81 MB
Download

Graphic
Intel Graphics Media Accelerator X3100
Size: 13.76 MB win2k_xp14371
Download

Wireless:
Broadcom Wireless LAN
Size: 6.9 MB 6.20E
Download

LAN/Ethernet
Broadcom Ethernet driver version 10.24.0.0.
Size: 13.0 MB 1.00 rev A
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Modem
Agere Systems HDA Modem
Size: 12.63 MB (Originally for vista but reported work with xp)
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Bluetooth:
Software and Drivers for HP Integrated Module with Bluetooth Wireless
Size: 39.31 MB 4.00 I
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Driver - Audio
(Install according to order)

Microsoft Universal Audio Architecture (UAA) Bus Driver for High Definition Audio (sp32646)
Size: 35.50 MB
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Restart after Installation , Then install audio

ADI SoundMAX High-Definition (HD) Audio Driver for Microsoft Windows XP
Size: 6.78 MB 5.10.1.5210
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Drivers - Input, keyboard and button devices

Synaptics Touchpad
Size: 24.26 MB
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HP Quicklaunch Button
Size: 19,65 MB
Download