Computer won't boot after CPU upgrade?

jvhbv7

Commendable
Dec 9, 2016
3
0
1,510
I recently purchased an i7-870 as an upgrade to an i3-550 for my Gateway SX2850, but now it won't start up. I have the latest BIOS installed and I cleaned off all excess thermal compound before applying it. When I attempt to turn it on, the fan starts, runs for 1 second, then turns off.
 

jvhbv7

Commendable
Dec 9, 2016
3
0
1,510

Ok, do you have any idea why it's not booting correctly?

 

jvhbv7

Commendable
Dec 9, 2016
3
0
1,510
I took out the processor just to look underneath, and it turns out that a tiny bit of thermal paste got down with the pins on the socket. I got out the thermal paste and now the computer boots up. The only problem now is that there is 1 long beep then 2 short beeps when I turn it on. I sort of expected this and I am going to get a video card.