computer not starting up after i changed psu and gpu

[aasimas]

I changed and replaced my old psu plus a gpu.
usually when I press the power button it lights up but this time it didn't do that. I opened up the case to see if any of the fans were working and nonw of them were working. Then I checked the 20 pin main motherboard connector to se4e if it was in place and it was so now I do not have any idea what went wrong. My gpu requires 2 6 pin connectors. One of the wires say PCI e so I plugged that, the other wire says B and I plugged tht in since it was 6 pin. Now I do not know what the problem is. please help.

Also if it helps I would like to tell you I cleaned my pc with a can of compressed hair. I don't think that is a problem.

 

[Agera One]

What PSU and GPU you have now?

 

[aasimas]

Gtx 660 and xfx core 550 w

 

[Agera One]

That PSU has one 6-pin PCIe connector and one (6+2)-pin PCIe connector.. Have you connected both of these to your GPU?
After connected, the 6-pin will fit in one 6-pin slot and with the (6+2)-pin the "2" pin will be hanging and the "6" will go into the slot..

 

[aasimas]

Yes but any guesses to why my pc isnt working

 

[Agera One]

Check whether the CPU is connected successfully, the DRAM is tight enough and the GPU is well seated or not..
Take a look at this sticky thread guide for the possible reasons of PC booting problems

 

[aasimas]

I have taken out the gpu to see if that was the problem but still it does not start. I did not touch any other components , just took out the main heat sink, the psu and the gpu. Any other thing I must do or check.

 

[aasimas]

Pc turns on now but my pc closes after 2 min, maybe cuz of heat. not fans turn on except the gpu fan.

 

[Agera One]

Yes, check the connector pins o the 8/4 pin CPU connector on the motherboard.. Have you wen through the full guide carefully?

 

[aasimas]

Pc is up and running now with no problems. All the fans are also working. Now my pc s making too mucch fan noise. It suddenly gets loud and then its quiet again. I cannot feel any heat comming from any components. What can i do to stop the loud noise tht is coming from the fan?

 

[Agera One]

Which fan it is? PSU fan? CPU fan? GPU fan? Cabinet fans?

 

[aasimas]

how do I find out? Gpu and PSU are new so I can RMA them if problem is in that
It gets very loud when I play games and watch videos. Otherwise it is not so much noise. I mean I can still hear but its not like too much.

 

[bmacsys]

Pc is up and running now with no problems. All the fans are also working. Now my pc s making too mucch fan noise. It suddenly gets loud and then its quiet again. I cannot feel any heat comming from any components. What can i do to stop the loud noise tht is coming from the fan?

If the fan noise is bothering you go into the bios and under pc health enable smart fan.

 

[aasimas]

if i do this than does it risk my pc in any way( high temps. lower health, low performance, etc)

 

[aasimas]

My cpu fan is making a lot of noise. I want to replace it.
how do I know how much mm fans I need and if a certain heat sink will fit on my motherboard?
I think I will replace the heat sink but I need to know some stuff before I buy it?

 

[Agera One]

Give your motherboard, CPU's model and make..