PC not booting after applying thermal paste

My heatsink was very Dusty.
So today I removed it, cleaned it and reapplied thermal paste after cleaning the top of processor. I did pull the leaver to clean but I didn't remove processor.
I accidentally broke one of the lock pin while placing the heatsink. But still other pins are holding it perfectly. I also plugged the fan connector currently.
After doing all this my pc is not booting I can hear the fans running and there is the green light, but there is no orange light which used to blink before.
Is there any power supply problem and if there is then how to solve it?

telepro21 said:

There are so many sensitive items in a PC in/on/around the CPU and heat sink area, a review of the procedure that you followed may be in order. One reference that I have used in the past can be found here--> How to install Heat Sink/Fan | hardwaretexpert

I read all the things on your given link.
And I think I did almost all the things correctly.
There is a green light above power button and small orange light below restart button.
The green light is showing but there is no orange light which is supposed to blink.
Tell me what does this indicates?

Your motherboard doesn't have a lot of diagnostic display LEDs.

I suppose that your PC doesn't have a speaker installed. (See your manual for the two pins on the front panel header.) If you can get such a speaker and connect it, you may get BIOS beep codes that indicate what the problem is. You'd get something from that even without a POST display.

I'm not sure that having 3 of the 4 heatsink mounting prongs intact is adequate to hold the heatsink flat against the CPU. n the other hand, I'm not sure that alone would keep the PC from booting. Either way, you should replace the heatsink. OEM style ones are inexpensive.

bobkn said:

Your motherboard doesn't have a lot of diagnostic display LEDs.

I suppose that your PC doesn't have a speaker installed. (See your manual for the two pins on the front panel header.) If you can get such a speaker and connect it, you may get BIOS beep codes that indicate what the problem is. You'd get something from that even without a POST display.

I'm not sure that having 3 of the 4 heatsink mounting prongs intact is adequate to hold the heatsink flat against the CPU. n the other hand, I'm not sure that alone would keep the PC from booting. Either way, you should replace the heatsink. OEM style ones are inexpensive.

I exactly don't know what was the problem. Here is what I did-
I removed the fan and came to know that I have applied too much paste so I cleared all the paste on top and from heatsink.
When I was fixing the heatsink on CPU before, the heatsink was not fitting currectly other locks were getting automatically removed and hetsink tilted when I was trying to lock the pins. So I fitted all the lock forcefully all the way in.

But this time I didn't did that.
I applied pie size thermal paste and fitted the heatsink balanced it on CPU to make sure it is not tilted and turned the knobs to lock it.

So now my PC is running normally.
I checked the temp with hwmonitor and it was 43-52C idle.
But when I used the prime95 version 2.85 small test the temp skyrocketed to 100C, I freaked out and quickly shut down my pc.
I didn't know it would force it this much.

I guess I will still need to buy new CPU fan.