Windows 7: Windows 7 install problem (Vista and XP dual boot)

I have a Vista laptop with xp and Vista installed because I do not want to give up xp, I enjoy it to much. I wanted to try Windows 7 so I set it up in a "triple boot" fashion. Vista and Windows 7 works great, but xp will not boot. It says I have a missing or corrupt hal.dll. When I uninstall Windows 7 and restore my backed up bootloader settings Windows xp boots up. I want to keep trying 7 but I don't want to give up xp, can this problem be fixed?

Case 1: You have Dual Boot Windows 7 and XP/Vista and you lost the XP/Vista boot option at startup, but Windows 7 boots fine.

Solution:
1. Start Windows 7.

2. If you can see your XP/Vista partition in Computer, write down the drive letter (e.g. D:)

3. If you can't see the XP partition and you see all others but this one, open Control Panel - Adminstrative Tools - Computer Management -> Disk Management(left pane) and right-click the partition without a drive letter, choose "Change drive letters and paths" and assign a drive letter for the partition, e.g. D: .

4. Open an elevated command prompt and type the following lines followed by Enter for each line, changing the drive letter D: (in blue) with the one on your XP/Vista partition:

FOR RESTORING XP

FOR RESTORING VISTA

(You will get a response saying that a new {UUID} was created successfully.
Write down or copy the new UUID.)

5. Done

Case 2: You have Dual Boot Windows 7 and XP/Vista and you lost the Windows 7 boot option at startup, but XP/Vista boots fine.

Solution:
1. Insert the Windows 7 Installation DVD and boot your computer with it (as if you were making an installation).
2. At the first screen , select your language etc and press enter.
3. At the second screen, click "Repair Computer" at the bottom left.
4. Wait until startup repair is finished and reboot.
5. Done. You can now boot Windows 7.

Case 3: You have restored booting Windows 7 using the Case 2 method or other way, but now you've lost XP/VISTA .

Solution: Follow Case 1 Solution.


Case 4: You want Windows 7/Mac Dual Boot.

Solution: Follow these instructions: OSX and Windows 7 Dual Boot

Hope it helps.

Limneos

I don't have DVD, help

You mean you don't have a DVD drive or a DVD Installation Disc?

Edit:
If you do have the ISO downloaded, you can create a USB stick to boot your computer with. ->
How do you make a USB drive bootable so I can load W7 on a netbook?

Then just go to case 2

If you don't have the Windows 7 Installation ISO/DVD disc , you will need to download one

Hello.
I have one question.
Which edition is better?
32 bit or 64 one?

I am also using 3 OS. Win 7, Vista and XP. After i installed windows 7 my xp has crashed. It is showing me that \ntdlr is missing. My windows vista and seven are working fine.
Please help me.

Thank you

Well probably you cant boot you XP because boot files are located to another location, because the fact that you have three OS systems.
My advice, true to run one OS and use VMWare workstation to create virtual machines for the other ones.

Scroll up the solution was given. If you don't like using command line you can use EasyBCD - Edit Boot Configuration Data (BCD) in Windows Vista | Windows Reference

I have tried everything shown in the post. I have even tried repairing my windows xp, but when i do a startup repair for my win vista, then xp crash again. But my Vista and 7 are working fine. My windows xp keep showing me \ntdlr missing and some error x000000f.

Are you sure you did not install windows 7 to where XP was installed?