Windows XP SP3 Free Download Bootable ISO (from the official source). This is Windows XP Professional Service Pack 3 Genuine iso image (DVD) for 32 bit and 64 bit systems.
Yeah . . .
One of the issues: The place you are trying to get the Windows XP OS ISO is not legitimate/clean. (Not that there is many places you can get a legitimate and definitively clean Windows XP ISO image from - especially not without certain subscriptions.) A torrent site?
Another issue: the first link you gave was to the SP3 ISO - not the Windows XP OS, just SP3 for Windows XP.
Another issue: even if you get a legitimate/clean ISO image of Windows XP and you have a product key - you either have to make actual physical bootable media out of it and reboot to install it on your current system or run a virtual machine and install it onto said virtual system. You cannot stand on the rug and pick it up without moving. ;-)

Why are you looking for the Windows XP OS? If possible, as an IT professional friend - they may be able to acquire the media - but you'd still need a product key (hopefully a legitimate one.)
As for Windows 10 TP, if your Windows 8.1 system is legit, you shouldn't have a problem getting the Windows 10 pre-release - although not so sure you want to do that if whatever you are trying to use is already giving you trouble and/or it is your primary system . . .
Read about what you need for Windows 10 TP here:
. . . and please, PLEASE read this:
http://windows.microsoft.com/en-us/windows/preview-faq
Xp Sp3 Iso Image Download

Xp Professional Iso Image Download
. . . and comprehend what it is you would be getting into.
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