Question PC turning itself on after being turned off

[Guilherme 22]

The title says almost everything. Some days ago, the power went down four times in two days. After that I've getting this problem where five second after being shut down, my pc turns itself back on. I have no idea what this is, no option that seems relevant in the bios and also no cmos battery to be reseted. Can anyone help?

 

[Lutfij]

Welcome to the forums and Happy New Year, newcomer!

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

 

[Guilherme 22]

Sorry, I wasn't aware of this. I think the specs below are pretty much all I can provide. I'm not very knowledgeble when it comes to pc's. However, if anything else is required, I'll do my best to figure out how to find that information.

CPU: Xeon E5-2650 v4
Motherboard: INTEL X99-P4 v8.2
GPU: RX 5500XT
PSU:TGT Tomahawk 500W TMWK500 (About 3 years of use)
OS: Windows 10 Pro
BIOS version: American Megatrends Inc. 5.11, 06/03/2024

 

[--SID--]

Get a real PSU first.

 

[ex_bubblehead]

Agreed, you need to start by replacing that current power supply shaped object you have with a real power supply before the serious troubleshooting can begin.

 

[Guilherme 22]

Any recommendations? I was on a extremely limited budget back then.

 

[--SID--]

Any recommendations?

Depends on the availability. What country/webshop?

 

[Guilherme 22]

I'm from Brazil, we have quite a few webshops and we also buy a lot from china. The bigger issue is USD, which makes everything quite a lot more expensive.