i dont know what to do^^

hey guys,
first of all,my english is not so good but ill do my best^^

i just got a new cpu,but im not happy with it.its the q6600,before i had the e2200.
with the e2200,bfbc2 was very hard to play.now it runs good but the cpu temp goes up to 71°C..
it is the original cooler for the q6600 with new heatsink paste.
so the cooler gets very loud after some minutes.
the other problem is,i thought i will get a good performance boost,but games like metro 2033 or bulletstorm still run bad.
i dont know if i did something wrong.maybe the fsb is wrong now?the e2200 was 800mhz,the q6600 1066 i think.do i have do change something in my bios?
when i installed the q6600,the system didtn boot.it goes on,off,on,off,on,off....
than i unplucked my hdds,started again and it worked.so i plucked them again and now it runs.and yeah,i resetted my bios.
i didtn update my bios for some years now cause i dont have a floppy drive^^
and some people said flashing with usb stick is dangerous..
my other components:
msi p35 neo
gainward gtx 260gs
4gb g.e.i.l ram

psu is a xsilence 500watts.but i think thats not the problem.if theres a problem with the psu the system should not boot right?
i really dont have a big plan of all those computer things.

but i think with a system like this,i should be able to play all new games on middle specc?

if you need some screenshots,please tell me exactly wich ones please.i have cpu-z and core temp.
and i didnt reinstall my windows,cause i think win7 64 bit can handly a cpu change.

thx for helping:smile: