I am sorry but I don't know what it means so likely no
Don't worry about the "surge-protected plug socket", 90% of the time you only have those in a bathroom. It's the plug with the two buttons.
Anyways, -
these- are surge protectors. To tell the difference between a surge protector and a regular power strip is that surge protectors will have
a rating, in Joules, of energy showing the maximum voltage the protector can handle from a power spike. You can find those numbers on the box or strip itself. If there are no numbers listed, it is just a power strip. The keyword you're looking for is
Joules. A surge protector guards against the damage that sudden power surges can cause, stopping things from frying out.
If your PC is not turning on with the GPU plugged in then the GPU is not getting power or not enough power. Make sure all the PCIe slots (6/8pins) on the card is plugged in from your power supply. Also make sure the monitor is directly connected to the display ports of your graphic card, not the motherboard's
What does the LED code stay on (located on the motherboard) when you turn on your PC?
The best thing to cover everything is to get a better PSU with a Gold efficiency rating.