Laptop recently started to make noise on start up, feels and sounds like it's coming from the area below the keyboard in the lower left part, it's an acer aspire 5570-2067. it makes noise for a while, then it eventually stops. If i hit it while its making noise (lightly, not hard of course), it changes pitch, but sounds like it's something like the fan, and obviously never used to do this before. what should i do??

Keyboards on Windows computers can repeat letters when key press sensitivity is too high. This problem can be rectified by adjusting your keyboard's repeat frequency. Once this is lowered, key presses will occur slower and you will not have the letters repeated instantly.

Click"Start," then "Control Panel." Click "Hardware and Sound," followed by "Keyboard." Move the "Repeat delay" slider further to the left below the "Character repeat" option. The further left the slider moves, the longer the delay will be before a character repeats.

Keyboards on Windows computers can repeat letters when key press sensitivity is too high. This problem can be rectified by adjusting your keyboard's repeat frequency. Once this is lowered, key presses will occur slower and you will not have the letters repeated instantly.

Click"Start," then "Control Panel." Click "Hardware and Sound," followed by "Keyboard." Move the "Repeat delay" slider further to the left below the "Character repeat" option. The further left the slider moves, the longer the delay will be before a character repeats.

Have you checked the brakes,wheel bearings?

have someone ck the wheel bearings,and ck for poss. vacuum leak at upper to lower intake manifold gaskets

it can be the cooling system, but you will have to show your machne to a reparator.

I can give you some ideals but not Sure which direction to go, does it have a vachum pump that you are aware of sir? if it does then the vachum line may have come of the fuel regulater and that may be casuing it to pluse and would explaing the hissing sound. Since diesls don't have vachumm like a normal engine they use a pump, and that is what it sounds like to me. Also Ford had some minor problems withthe engine intake pipes or rubber connecting hose on the turbo, they would slip off and make this noise to. Look to see if there is any oil around the turbo hose's if there is feel under the hose and see if you feel oil there on the back of the tube, if there is you will have to replace the tubes, they cost from ford $35.00 for a set, if you need more help post here and I will help you if Ican. Thanks for using fix ya
Avid101

It may be the brakes are hanging up sometimes the brake calipers don't release as much as they should and the brake pads sit to close to the rotor, it may be time to replace pads

Its possible but it would require taking out all the screws from the bottom of the latop, taking out the keyboard and the screws from the top cover. Then disconnecting the ribbon for the mouse pad and any other plugs coming from the top cover. After you take off the top cover you'll expose where the fan is at and at that point you can clean it off. If it still makes weird sounds then the fan would need to be replaced.

Sound like you have a stuck key and the bip noise is the keyboard buffer pverloading.
If you can't unstick this key, you need a new keyboard.

if noise is heard when taking off from stop turning wheel sharp right or left replace axle.What ever side noise is coming from.