Noisy PC!!

[dorothee]

why after opening up my pc - does the humm noise increase to such a crescendo - that I end up turning it off! It starts off with hardly any noise at all ...

[rugeleyboy]

sorry i have no technical jargon but your fan is broke me thinks, i have just replaced mine because of the same problem.

[Tallulah!]

Ours starts off with a noise like an engine and stays that way until I bash it. Probably not the best solution!

[ChuckFickens]

The cases of most modern computers are designed to play a large part in channeling the air flow through them from the fans and over the parts that need it.

Remove the case the air is no longer channeled to the places it needs to go, those parts start to overheat so the fans get faster and faster to try and cool them down (hence also noisier and noisier)

So in short, if you run your computer without its case firstly it will get noisy, secondly you risk damaging parts due to overheating as they are no longer getting sufficient cooling.

[hc4361]

You need to clean the fans out.

[ACtheTROLL]

dorothee - a clean fan is important as you know

but I suspect chuck's explanation is spot on

[trish432]

I suspect dorothee means starting up, not running the computer with the casing opened up.

[chas2008]

most fans were designed to be used on the horizontal (flat), as PCs are now mainly towers the fans are being used at the wrong angle, on there side. This causes undue wear on the bearings hence the noise..Later fans have overcome this with different type of bearing
(thats what ive always been lead to believe and it sounds logical )
Dead simple to replace, Maplins should have a replacement on the shelf.