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Discussion Starter · #1 ·
Dear everybody,
Im installing XP with pre-installed vista and im done with reading forums here on about installing xp over vista problems. My case is my monitor gets blue and telling me to check for viruses, the hard drives and newly installed hardware.Please see the attached picture of the error i take.

And i cant find any solution so i ask help from hp.
This what they reply:
*This document describes potential compatibility issues you may encounter if you are considering downgrading a computer that came with Windows Vista to the XP operating system.Early adopters of Windows Vista operating system experienced some compatibility issues when using certain XP programs with Vista. These compatibility issues led some people to consider downgrading the operating system from Vista to XP. Also, many users were familiar with Windows XP and did not want to adopt to the new look and feel of Vista. Most of the technical issues are resolved by installing the Vista Service Pack 1. HP strongly recommends against the process of downgrading a computer that came with Vista to XP.When attempting to install XP on a computer that was designed with Vista-compatible parts, the first issue you may encounter is that the installation disc may not recognize the hard drive. The installation will report an ATA error that it cannot find a hard drive on the computer. Vista uses a technology called Serial ATA (SATA) to control the hard drive, while XP and older operating systems use ATI-native technology. The BIOS, which controls all of the hardware components, is using native-SATA drivers but the XP installation disc cannot recognize this newer technology.Depending on the brand of CPU processor and the version of BIOS installed, it may be possible to disable the native SATA settings and allow XP to continue with the installation. However, some BIOS versions do not allow you to easily change the SATA settings.
Issues when BIOS cannot disable SATA
If the BIOS does not have a setting to disable the native-SATA settings, you may have to use a procedure called slipstreaming to install XP. This procedure involves using third-party tools that are not supported by HP and may cause unexpected problems. You should search the web for instructions and tools before attempting to change the Vista operating system. For a brief overview of the slipstream process, see HP Notebook PCs - How to Add Serial ATA (SATA) Drives to a Windows Vista Installation .
Please see this site to read choices to disable/enable SATA settings to let you see if this is a good solution to my problem.
http://h10025.www1.hp.com/ewfr.....=c00758841
AND IM ASKING A FAVOR, to please help me look for SATA AHCI DRIVER for my processor (Pentium(R) Dual-Core Cpu T4200 @ 2.00GHZ if the recommendation from hp is good.
My laptop is compaq presario CQ40-340TU.
Thanks in advance.
xhanex
 

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XP cannot be written over the top of Vista. You must format the drive before installing XP. But be sure you can find XP drivers for your machine hardware before doing it..!
 

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Discussion Starter · #7 ·
hi to all..

thank you fairnooks for giving me a link.. i finally installed XP on my laptop... and i already have dual OS.. Cheers... very thanks to justanotherpixel..

happy...
 
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