You can buy fans of diff size and color at alot of place's Best buy place's like that.You should have a spot for one on the case in the back just get one that will fit in the spot..on the case.or you can drill,cut,carve pretty much anything you want in the cast lol..most of them are made for best venting with the hole's suppled in the case...I would just throw one more in the back...hope that helps...
suggest making sure the case, heatsink and fan are dust free and running well. you can also carefully lube the fan by peeling the centre sticker back and putting a TINY drop of sewing machine oil on the spindle, leave for 10n mins to penetrate, put sticker back and replace, i've done this many times. also carefully remove the proscessor, clean the old thermal paste off it and the heatsink (good pc store can supply an appropriate solvent) put new thermal paste on (about a small pea size will be plenty). if it was running ok before this should sort it.
i am a student of diploma in electronics and telecomm
can anyone suggest me projects related to the below domains:-
electrical and electronics