Hi all - I have just built my first system. So far all I have done is built it and powered it on (and I am amazed it didn't go "puff" ) and gone into the bios (ie. not yet put Windows 7 on it). The system is: Intel i5-750 Gigabyte P55A-UD3 motherboard 8GB gskill 1600Mhz memory Bluray reader 2 WD Black HDDs Sapphire ATI 5770 1GB. The (retail) processor came with its own cooler which is the one I used. There wasn't any separate thermal grease in the box, although I believe there is some sort of paste on the cooler itself. So in essence, it's a standard i5-750 set up. When I powered it up, I looked in the BIOS screen at the CPU temperature. This was shown as 42C. I don't know but I would guess the room temperature would have been around 23-25C. As a noobie, I'm not sure if this is high or not or whether it will go up significantly once I get Windows 7 etc and actually start using it. Can someone suggest what temperature I should see at this stage? As far as I can tell the cooler was inserted correctly (the instructions with the CPU weren't that helpful. The plastic cooler "pins" are protruding under the motherboard as per the picture in the gigbayte book, so I believe the cooler is installed correctly. (From what I can gather, if the CPU wasn't get some cooling then it would pretty much overheat catastrophically within a few seconds?) If the above is not "normal" then can anyone give any specific recommendations? I may invest in a new CPU cooler/grease/paste. Are there any good online guides anyone can point me in that explain this to a new (and nervous!) first time builder? Thanks for any help.