New PC boots up after 3 failed attempts

[juformw]

Hello,

Recently I have bought a new PC, 6 days ago to be exact. For the first two days it worked perfectly fine, everything was silent, no overheating and it always booted up on the first try, even when unpacked and plugged in for the first time. On the third day however I was a little frightened when after pressing the "power" button it restarted itself 3 times before booting successfully. Apart from this issue it still works fine, no overheating and no errors or any other indications of a failure.

I have already searched a bit aout this issue but don't have the funds to replace any components or experience in computer maintenance to do any serious work inside. I already took some basic steps that were advised if such issue is encountered:
-Checked if my memory is running at it's 2400Mhz. It was downclocked by the motherboard to 2133Mhz so I manually changed it to 2400 since I read that the motherboard trying to downclock the memeory might be an issue here.
-Disabled the "fast boot" option in Windows
-My PC is connected directly to a wall outlet

This is my specification:
-Intel Core i5-7500
-MSI GeForce GTX 1060
-MSI Z270A PRO motherboard
-2x4gb Patriot Viper 2400Mhz RAM
-Silentium PC Vero M2 Bronze 600W power supply

I've read a lot that it might be a PSU issue but I don't have anyone to borrow a PSU from or any funds to buy a new one currently.
What other things might be this issue casued by and is it safe to use the PC under such conditions or is it better to service it before any other components fail?
If needed, I can post voltages displayed in BIOS and other information that would help finding the issue.

Thanks in advance

 

[Dark Lord of Tech]

Most likely the poor quality.

 

[juformw]

Considering my budget and many reviews on the internet these components seemed like a good quality for their price. Seen many reviews written by people who bought and use them with no issues so I doubt the quality of these components is below respectable. Could you provide a more detailed answer?

 

[Dark Lord of Tech]

Not 100% it's the issue , but considering the quality of the PSU it was my first guess.

 

[juformw]

Would you advise changing the PSU if I have such an opportunity? Also, is it safe to use my PC under such conditions? I have not experienced any weird sounds or the power unit excessive heat and turned all possible motherboard settings that should, well, at least in theory, protect it from excessive voltage and power related injuries. If this keeps happening I'll service the computer for sure, but is it better not to touch it for now or is it safe to use as long as everything else works fine?

 

[Zerk2012]

I would first remove and reinstal the memory, video card, CPU power plug, video card power plug, and 24 pin motherboard power plug.
You can go into BIOS and enable XMP profile to get the memory back to 2400 that is not the problem.
From their try 1 stick of memory and see if it boots first try, if so then try the other single stick. If it boots the first try with both single sticks then add 0.02 volts to the memory and try it with both sticks.
Try to borrow we a friends PSU to see if that is the problem
Get you a surge protector to plug the PC into always use one for a PC. (This will not fix it but should be used)