Question 5 Beeps and psu fan gets louder after cpu upgrade

[Hezuuu]

A day ago, i tried to upgrade my cpu, going from an I3-2100 to a I7-2700, everything was going well, i put the thermal paste and the cooler i guess, then i replug everything, but after trying to boot it, i heard 5 beeps, no red lights, with no display either, then after a few seconds the psu fan gets louder, i unplug it, then when i put the old cpu back (the I3-2100), everything goes back to normal, so i know it's an issue from the new cpu, but what could cause that, like what's wrong with the new cpu

 

[rgd1101]

what the motherboard? might be it is not supported?

 

[Hezuuu]

im not too sure of the motherboards model, i think its the hp 1497, but my pc is a hp compaq 6200 pro sff (also my bad, i meant 3700), im guessing the chipset doesnt support it, i did see a guy using the same cpu in his pc, but he didnt try to boot it so yeah

 

[Hezuuu]

what the motherboard? might be it is not supported?

oh wait, here is the model HP 615114-001

 

[rgd1101]

that a 2700k not 2700, not supported

Hp Compaq 6200 PRO SFF- CPU Upgrade

So i Have a Hp Compaq 6200 PRO SFF- CPU: Intel Pentium G620 RAM; 12 GB Built in Intel HD Graphics. I saw online that i could upgrade my PC to Intel i5-3470 3.2GHz 6MB 5GT/s SR0T8 LGA1155. So i purchased it and inserted it but every time i tried to start the PC, it gives 5 beeps with no red...

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