CPU not starting up on boot.

[GomerPyle1228]

So I've been trying to troubleshoot my PC for awhile and the problem I was having was all the fans were spinning up but I was not posting. Yesterday I figured out that my CPU isn't turning on at all because the CPU is creating no heat no matter how long I leave the system running. Any ideas on what could be wrong other than my CPU just being dead? 

[Billy_Mays]

Did you place it in properly?

[GomerPyle1228]

1 minute ago, Billy_Mays said:

Did you place it in properly?

yes

[JakeNTech]

Is the CPU power connecter, connected? Is it in the right way around?

[Billy_Mays]

1 minute ago, GomerPyle1228 said:

yes

did you plug everything in right?

[GomerPyle1228]

Just now, fixitnow said:

Is the CPU power connecter, connected? Is it in the right way around?

yes

[JakeNTech]

Just now, GomerPyle1228 said:

yes

You either have a dead CPU,motherboard or PSU then. Make sure that the motherboard isn't touching the bottom of the case, and that everything is connected properly. 

[BlueChinchillaEatingDorito]

7 minutes ago, GomerPyle1228 said:

So I've been trying to troubleshoot my PC for awhile and the problem I was having was all the fans were spinning up but I was not posting. Yesterday I figured out that my CPU isn't turning on at all because the CPU is creating no heat no matter how long I leave the system running. Any ideas on what could be wrong other than my CPU just being dead? 

Clear CMOS. If that doesn't work and you've verified that the PSU works, you most likely have a dead board. CPUs and RAM are generally the last things to die in a system that isn't pushed to the limit.

[GomerPyle1228]

21 minutes ago, BlueChinchillaEatingDorito said:

Clear CMOS. If that doesn't work and you've verified that the PSU works, you most likely have a dead board. CPUs and RAM are generally the last things to die in a system that isn't pushed to the limit.

So let me tell you what all I've done to troubleshoot which will hopefully explain why I think it might be the CPU. I have at least two of all parts of the system and have tried different combinations of parts to try to get the system to post.

• First i tried a new motherboard with my current CPU and I did not get a post.
• I then tried the new mobo with my old pentium cpu which posted once.
• Because I did not want to keep the new mobo if the mobo wasn't the problem I decided to put the old pentium in the original mobo to see if I could get a post. This combination did not post so I decided that maybe both the original mobo and cpu were both dead. 
• I then put the pentium back in the new mobo and started to put everything onto the system and tried to post before putting everything back into the case. At this point the system did not post.
• Since then I have tried using different ram sticks to see if that's the problem as well as a new PSU.

I hope that all made sense. So at this point I am not sure what the problem is but to me it seems like my old mobo is killing CPUs. 

[BlueChinchillaEatingDorito]

1 hour ago, GomerPyle1228 said:

So let me tell you what all I've done to troubleshoot which will hopefully explain why I think it might be the CPU. I have at least two of all parts of the system and have tried different combinations of parts to try to get the system to post.

• First i tried a new motherboard with my current CPU and I did not get a post.
• I then tried the new mobo with my old pentium cpu which posted once.
• Because I did not want to keep the new mobo if the mobo wasn't the problem I decided to put the old pentium in the original mobo to see if I could get a post. This combination did not post so I decided that maybe both the original mobo and cpu were both dead. 
• I then put the pentium back in the new mobo and started to put everything onto the system and tried to post before putting everything back into the case. At this point the system did not post.
• Since then I have tried using different ram sticks to see if that's the problem as well as a new PSU.

I hope that all made sense. So at this point I am not sure what the problem is but to me it seems like my old mobo is killing CPUs. 

What are the boards and PSUs you were using? It's not impossible, but it's pretty rare for a board to be killing CPUs like that. I've only heard of PSUs blowing up boards and CPUs back in the mid 90s and early 2000s.

[GomerPyle1228]

12 minutes ago, BlueChinchillaEatingDorito said:

What are the boards and PSUs you were using? It's not impossible, but it's pretty rare for a board to be killing CPUs like that. I've only heard of PSUs blowing up boards and CPUs back in the mid 90s and early 2000s.

PSUs are a corsair CX750M the new CX series also a cheap best buy brand PSU just to check and see if the PSU was the problem.

The boards are a Gigabyte B85M and a ASUS Z97X