Question My computer doesn't work anymore after installing new PSU ?

[Eternalll]

I have a PC I built myself and today I got a new MasterBox Q300L case
and Thermaltake 600w PSU.

I tried the power supply earlier and the PC would turn on but no display, I was hoping that after I moved everything that it’d fix itself, but no, It still showing no display.

After searching up a couple solutions I tried some and eventually landed on removing the cmos battery, I’m not sure if the thing I read was fake but it said to remove it while the PC was on, so I did, however when I did it fell and I couldn’t catch it, it collided with my GPU and sparked and now the pc won’t turn on at all (it tries to for like half a second before stopping)

I don’t think it messed up my GPU bc it has a power status LED and it’s normal for a second when it is on. I think it might be the cmos but I have no replacement, I’d like to get a second opinion before I have to buy a new one (really hoping my PC didn’t get messed up I’ve been building it up for over 4 years)

Things I tried:
- Reseating ram
- Reseating GPU
- Checking all cables
- reseting the cmos (I did it twice, the first time (before I dropped it) it didn’t fix it but the PC also wasn’t on)

I would also like to say it was working fine earlier today it only stopped working after I tried the new PSU

My PC before consisted of:
- Asus Prime a320m-k
- GTX 1070 OC
- EVGA 450w power supply
- Ryzen 5 4500
- crucial 16GB x 2 ram
- and a 1TB western digital nvme ssd

The only thing that’s changed is the power supply

 

[Eternalll]

nvm the GPU is for sure [bad language removed]

 

[triplex1]

I don't know where you saw that we do it while the computer is working, on the next computer you make be more careful