Issues with PC power supply (possibly).
Issues with PC power supply (possibly).
My computer frequently powers itself off, briefly restarting for about two seconds before shutting down completely. It operates normally with peripherals connected, except when I plug in my keyboard, which causes an immediate shutdown regardless of the USB port. Other laptops seem to work occasionally, but they only run smoothly for 15-20 minutes during gaming and then shut down again. If I switch to a different keyboard, it boots fine but fails shortly afterward. This issue started about two weeks ago, and despite no changes or installations, it persists. My system is Windows 10 version 22h2. I have the following specs: an i5 9600K processor, RTX 2060 graphics card, 16GB DDR4 RAM at 3200MHz, a Gigabyte Z390 gaming motherboard, Coolermaster MWE 750W power supply, a 500GB Samsung SSD, a 2TB HDD. I have never overclocked or experienced power problems before. Could anyone provide any advice? This is really frustrating.
Welcome to the forums, newcomer!
Which BIOS version is installed on your motherboard?
Coolermaster MWE 750W gold+
How long has your PSU been in use?
If you think the PSU might be causing problems, consider getting a dependable PSU that can supply 550W to your whole system.
Without any extra devices it starts up properly about 95% of the time.
What causes the remaining 5%?
Hi! I’m completely unsure about the current BIOS version I’m using since I haven’t updated anything other than XMP. I don’t know how to find a PSU or what’s going on with the startup behavior—everything seems to be acting up. The system is five years old, which adds to the confusion.
CPU-Z will show your motherboard details and the current BIOS version. Visit the motherboard’s official site to review available updates and understand the fixes they provide. If a relevant update is found, consider applying it. Changing the BIOS can be intimidating initially; remain calm and follow the steps carefully. Execute memtest86+ – it launches from a USB drive without requiring Windows. You can obtain it from: Memtest86+ | The Open-Source Memory Testing Tool (memtest.org). Running a complete test with no errors suggests your RAM is functioning properly. Additional passes may reveal hidden problems, though they require more time. This step is usually unnecessary unless you strongly suspect a memory issue. Some motherboards include a built-in memtest function within the BIOS. If you believe the power supply unit is the cause, consider purchasing a replacement from a retailer offering a solid return policy. Be ready to incur a 15% restocking fee if you must exchange the device.