Computer turns off and on but the screen is blank

After I cleaned my PC it doesn't work. I used a vacuum cleaner. When I boot it up it shows nothing on the screen and turns off few seconds later. About 3 seconds later it starts running again and remains running but the screen remains blank. This repeats every time i try to launch my PC

It's probably important to note that the fan on the power supply wasn't working at first but after I oiled it it worked properly

Also I remember having the same issue after cleaning with that pc about a year ago with the power supply fan stopping as well but after the fan started working the pc started up properly as well

Currently I'm unable to test my pc with a different power supply