Power Switch turns off automatically

[JTMC68]

Hey folks, I think I might have an issue.

Yesterday I added two case fans to my PC and everything worked pretty well until I tried shutting down the PC at night. After a fairly long period of installing a windows update, the PC went down hard as the switch on my power strip flipped by itself.
I've done some starting/shutting down and restarts since and haven't had any other issues, but I also haven't put the PC under load before shutting it down again.

I'm fairly sure that the 2 fans aren't overloading my PSU and I checked all cables after putting in the 2 fans. Anyone got an idea what the issue is? PSU failure? Power strip failure? Freak incident?

Thanks in advance!

 

[CountMike]

Fans may not be overloading PSU but the rest of system might, specially GPU.
You were not clear, did power strip shut down or just computer ?

 

[JTMC68]

Yes, they both shut down in tandem, I had to manually boot the PC after turning the strip back on. It also finished installing the Windows Update.


My build:

i5-4460
Coolermaster Hyper Evo 212
ASRock H97 Anniversary ATX
Kingston HyperX 8gb
Seagate Barracuda 1TB
MSI Radeon R9 380 4GB
Cooler Master K280 ATX Mid Tower Case
XFX 550W 80+ Bronze Certified
2x Thermalright X-Silent 120mm Case fans

I know I'm getting close to the limit for the PSU but I should be in clear, shouldn't I?

 

[CountMike]

Well, you have to find which one is tripping which. If power strip kicks out it will shut computer down too. If PSU is overloading strip it will also shut down. I would try to connect computer to some other place first. If computer shuts down again than it's it's fault, if it doesn't, it's the strip.

 

[JTMC68]

Wouldn't the PSU trip its own switch too if it was failing/overloaded?

I'll get a brand new power strip tomorrow to make sure I don't grab another old and potentially faulty one.

 

[CountMike]

Don't you have some other place to plug just computer in without using the strip ?

 

[JTMC68]

Sadly not. This flat is abysmal as it has mostly single outlets and the few times it has two power outlets they're in places I can't reach/replace.