Windows 10: Pc wont display anything after applying thermal paste to CPU and GPU and now stuck in bootloop

So today I bought some thermal paste to apply to my Pc. I applied it to booth my CPU and GPU. After that I assembled and put everything back together and turned it on. All was going well until I got no display. I tried to solve the issue. I tried cleaning up any thermal paste I may have smeared on other parts of the GPU but it didnt help. Then I saw something saying to take the battery out of the motherboard for a minute. I did this and tried to start it again. It came on but still no display. Now, not only am I having GPU issues, my Pc is not stuck in a boot loop. The pc comes on for 10-15 se

:)

 

Thermal paste applied on your GPU / CPU, survey!

You already know what I'm going to say.

• Cool Silver G4
• ~9 months
• As directed first step,
  Second step I always install, then immediately uninstall, the HSF to remove the excess TIM. Which generally includes thoroughly cleaning either the processor die and/or the HS mating surface. Only both if I really screwed up and put way too much on, but always at least one or the other. Because it's almost impossible, IMO, to not apply too much TIM on your first try. And you can typically get by easily with half the amount(or ~ whatever is still stuck to the processor die or HSF after removing it). Next step I usually apply a few tiny pin point size dabs in any spots that look like they need more. Then final step, I reinstall the HSF, and call it good.
• Because it's some seriously good TIM! Best I've ever used. No joke!*Wink

 

Thermal paste applied on your GPU / CPU, survey!

For Cpu I applied cooler master thermal paste and its cool.

 

PC not booting after applying thermal paste

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.