Windows XP doesn't install on Vista laptop Acer extensa 4230?

Oh it will indeed install. What you should be looking for is a bootable version of the professional Windows XP service pack 3. Otherwise known as install from boot. So it's going to boot from your CD ROM and at some point you're going to be looking at your partitions. You need to delete I think you said vista? Need to delete the entire partition and make it one because you have the backup for Vista. Now before you do all of this make sure that you have like a USB drive loaded with all the drivers you need especially the Wi-Fi one and the preferably the graphics one too. From the manufacturer website or look for the iso out there that's called 100,000 drivers for Windows XP 98 etc. And look in there and make sure you have that so you can go online and get the rest of the drivers in case some are missing. But in most cases Windows XP generally will have 85% of them out there. But you can also get them later on but you need to be online preferably so since it's much faster that way. So the reason why you're having an issue is just and Windows 7 have that extra partition backup. What you delete both of them and if you want to divide up your hard drive that is fine into whatever how many sections you want. Whether it be another one split it down 50/50 or have three partitions it's all up to you. So when you're done you'll have drive see which will be your Windows XP and you'll have d,e etc for storage. So yes I even installed Windows XP on a Windows 10 computer with the Windows 10 sticker on it. It's just the HP ones you have to be very careful because once you delete the operating system you lose your CD-ROM driver and then you can't access it. Without either replacing the hard drive with another one with XP temporarily or doing this to USB installation. Program I recommend for that is why you am I. But the problem with the USB way is it's going to use the stock startup to install the setup.exe. this is why I recommend the booting from CD-ROM ISO or Windows XP professional. The key will already be installed you don't have to worry about that either. Is that your best bet you can do. This one is really easy to answer and I hope I've helped you. Keep in mind and go on Facebook there are actually a few Windows XP groups out there that are very active. They can direct you to files trouble helping troubles to your problems and such. One of my favorite ones I think is Windows XP 2024 and beyond. Then you have Windows XP forever groups. There's actually a few with the same name. So either way there's still support for Windows XP by the way. It just has to be done manually and I'll see you have to change the url through a patch that get your updates. They changed the location I know. So the patch will direct you to the new URL and no good reason why they did this. And it'll install updates like normal. This is why it's important that you find the XP groups after this to get that patch. Then if you are Developer or like become a developer of future Windows XP compatibility for newer computers. I would look for the Windows XP ddk or SDK group on Facebook. I hope I helped you and have yourself a great day