why does my computer sound like if there is a fan inside there?
440343
There are several fans inside for cooling.  There is one on your processor (the actual computer chip inside), power supply and probably your video card.  If you are just beginning to notice it, there may be a cable or something that is brushing against the fan.  You might consider opening the case and just making sure nothing is rubbing.
48605
If it's a steady whine, with no fits and starts, it's going to be a fan.  The possibilities are power supply fan, cpu fan, video card fan, and system cooling fan. All of them with the exception of the video card fan, are easily replaceable by a layperson with nothing more than a screwdriver.  Luckily, the video card fans are small and less likely to produce much of a noise, so it's probably one of the other three.
1168686
Some computers (especially laptops) have their own hardware volume control.  Even with all the Windows volumes at max, you can still get low sound if the computer's hardware volume is too low.  Check your computer and see if the volume is set too low.  I hit the function key and 7 or 8 to descrease/increase my volume.
625057
WHen you run the program, it is going through all the files in your whole computer, thats a lot of work. Your fan is probably heat controlled. WHen your CPU is working hard scanning, it is heating up so the fan comes on faster.
264220
Your cpu fan may not be working. You need to replace it before you computer overheats.\n\nThe CPU fans are not expensive, and easy to install. If your computer is a name brand computer, you can usually search the company's website for instruction on how to replace it.\n\nGood luck
629914
There should be openings for the fans in the back or on the bottom. Just listen and look in those areas to see if you can see or feel the fans spinning. Make sure the area is not blocked when you are using it and being in front of an air conditioner would help. There are also laptop cooling pads that plug into the USB port that you might be able to find.
223569
Dell P 2.4Ghz\n\n1. Noise-Fan sounds like it is going out..too lazy to fix it.\n\n2. Dust- Hate cleaning out the inside, but have to.\n\n3. Windows XP- Hate the look of it most times.\n\n4. Spyware- Hate cleaning it, but is necessary, although i barely get any.\n\n5. Windows Restarts- After you install some programs, it will just shut down and reboot without asking..i LOATHE that
817282
you might just have a defected input... if it is terrible quality sound on a new PC then i suggest calling customer service.
1106447
It would make noise when the processor gets hot and the fan kicks in. Sounds like a cooling issue. Have it checked and it probably needs the vents cleared or it is being blocked. Since it's new it should still be under warranty. So don't wait before it expires before you bring it in for service.
301051
ok first it isnt anything to fo with the tower, its to do with the berring in your fan , replace your fans with ultra quiet ones it will change the noize level
31865
Its prob the power supply. Does  the fan turn on ???\nYou might want to replace it ( $ 60 ) . Also make sure that the power button is on . On the back of your computer theres a little button . \n\nAlso check out my free computer articals at http://www.cityredding.com/computerhelp
1061239
The fan's job is to cool the computer.  It doesn't have much to do with how much work you're doing on it.  Sometimes the fan is just working harder because the computer has been on a long time.
745639
It's probably either the case fan or the power supply fan. I have hit the case a few times and it will stop. Dont beat on your case though ha ha. Open up the case, and see if you can track it down.
1169820
I'd start by looking at the fan and giving it a clean if its necessary.  If you've changed memory sticks, then they could be defective - there's always the option of a virus infection as well
116238
Your fan sounds so loud, because it is having to spin faster than it used to, in order to provide adequate cooling for the CPU.  Most CPU fan for the last 3-4 are 'variable-speed' fans. Which simply means that the fan can be spun at more that just one speed.  The fan controler sends variable votage to the fan to alter the rotation speed.\n\nSo, you need to ask yourself, why is CPU getting hotter....?\nAs the other posters pointed-out, one reason could be that dust build-up inside your case, and or the cpu fan/heat sink will reduce the heat disipation of the air flowing around inside your tower.  When dust covers something, it acts like a blanket, and convection heat loss is markedly reduced. If you can elevate the tower off of the ground by say 4 to 5 inches or more, you can dramatically reduce the amout of dust that the tower will suck into itself.\n\nA more common occurenc that I'VE personnaly run into in my shop of late, is that a tower with multiple fans...has had one fail.  Many towers I see have 2 case fans and the power supply fan (many p/s have 2!) So when one of them fails, a system that WAS barely heard, suddenly becomes noticable.\nThe more fans total there are, the less impactful the loss of just one would be.  \n\nHOPE THIS HELPS !
383441
It Sounds Like Ur Fan haz Had It I Had The Same Thing Happed To Me U Just Need To Replace The Fan Its Cheap To Replace And Easy To Do Hope That Helps
1134824
may sound crazy but it may be the monitor is too close to the computer or some other power source. try moving it away a foot of so. The reason i say this is the wavy, choppy view you are getting sounds like interference from speakers or some other power source. Its worth a try and wont cost you a thing and wont hurt any thing.