Changed CPU in my Dell PC, now Won't Boot

555captionhook555

Prominent
Jan 2, 2018
3
0
510
I just got my new CPU from eBay, and when I put it in and booted, it just started with a yellow light, and the fan's very loud, sounds like it's going full speed (The CPU fan(
Please help
 

Bob125484

Honorable
Jun 13, 2015
712
17
11,365


You may need bios update first. What is your mobo?
 

555captionhook555

Prominent
Jan 2, 2018
3
0
510


The pc is the Dell optiplex 760, and the CPU i bought is a Intel Core 2 Quad Q9505S 2.83GHz Quad-Core Processor, SLGYZ
I don't know anything else about it.