Question I scratched on back of my MSI Z270 PRO A Motherboard

[Help_seeker_1]

Hello there,

I scratched today my motherboard MSI Z270 PRO A while installing it to the chassis. I am looking for some support on how to fix it. the scratch is obviously located on the back of the board. it affected 5 traces which are just next to the power connector. I can't start the PC anymore 🙁
I have taken 2 pics of the scratch:

https://ibb.co/R2tgKZf

https://ibb.co/T2MJTXV

Thank you for your help asap.
my PC specs:
PSU 750 Watt
Intel inside 7th generation
4 GB ram
Motherboard MSI Z270 Pro A
SSD 128 GBs
Nvidia GTi 1050 Asus and Nvidia GTi 1050 Gigabyte

When I hit the start button on the computer it doesn't start up. Please advise how to deal with this situation. I read on the internet that I can use the Nail Polisher or a pencil to fix it? is this possible?

Many thanks in advance for your support!

 

[DSzymborski]

http://www.geekdot.com/scratched-traces/

Out of curiosity, why the two 1050 Tis?