Switched of electricity, now PC won't start.

[Holaway]

Had to turn of the electricity to disconnect some plug sockets for painting. Turned electricity back on but now the pc shows this:

[#2]

Ensure that the power supply (PSU) is functioning properly. Make sure that the power cable is securely connected to both the wall outlet and the PC. Look for any indicator lights on the PSU itself (if it has them) and make sure they indicate normal functioning.

[#3]

Disconnect all peripherals (USB devices, printers, external drives) except for the keyboard and mouse. Try to boot the PC with minimal hardware connected to see if one of the devices is causing the issue.

[#4]

If Windows was in the process of writing or reading files when the power was cut, it might lead to file corruption, resulting in various error screens.

[#5]

Make sure all internal components are seated properly. Open the case (if you feel comfortable doing so) and check that RAM, GPU, and any other expansion cards are properly connected.