Are you using stock? I suggest get a good after market cooler. How big is your case and other clearnce?
Sorry do not understand your query ref stock
My PC is a normal desktop and I am just looking for a new cooler and advice on which one fits the E7400 processor.
If I know which brand and model I can go get it!
Well do you want a new fan or a new cooler?
The compatibility of the cooler doesn't depend on the processor but on the mainboard and the size of the case.
And depending on your case I would recommend Scythe coolers, because they are very good, e.g. the Mugen 2 or a little bit smaller, the Ninja 2 or Katana 3.