Question Replaced PSU, now my files are corrupt.

[benzzodude]

After replacing my old PSU, some of my game folders' contents are corrupted and need to be re-downloaded. Does anyone know what caused this? And is there a way to fix it?

Specs:

Windows 10
Intel Core i7 4790k 4.00 GHz
Gigabyte RTX 2070 Super
16GB RAM
256GB SSD, 1TB SSD, 1TB HDD