I'd say that since if you have a pirated (not fake... Don't help perpetuate Microsoft's bastardization of the word genuine) copy of XP, Microsoft tends to cut you off from security updates, you probably went and got hit by some malware. Which is one of those gifts that keeps on giving, even though you wish it wouldn't. Get one bit of malware on your system, pretty soon it'll multiply into 5-6, and then keep on growing.
In no particular order, here's what I'd suggest doing... First, get a legal copy of XP before it's too late and you're stuck with Vista. Once you do that, back up everything you don't want to lose, and format the system. That should clear out whatever garbage you've managed to pick up.
In the mean time, download some malware removal programs. AdAware, Spybot, and AVG Anti-Spyware come to mind. I don't think Windows Defender will run on pirated copies of XP, but it might be worth a try as well. That might help buy you some time, but it's a stopgap measure at best. Get around to doing the above as soon as is possible.
well,my xp software is fake as i am always reminded of by the computer,but the problem is that now,everything is comparitively slower,even for the computer to fully boot takes about 6 minutes and cpu always makes a loud an annoying noise which i think is from the fans.i want to know if the slower rate and the noise is a hardware problem or if the two are caused by two different problems