AG3-605 Predator Desktop Powers Off and Re-Starts for no apparent reason.

Pekasbub

My computer has begun restarting for no reason once it has been operating for a time. I installed a temperature check app, and the temperatures do not appear to be approaching maximums. I opened up the case and there was sadly a bunch of dust and buildup on the main board fan. I took it to a repair shop, and they used compressed air to clean out the interior well. They then ran some stress tests and the machine ran for close to an hour with no problems. Today, granted after 5 hours of time on, the machine shut down again. Any thoughts or diagnostics I should try to remedy the situation? Do power supplies ever fail in this intermittent matter?

StevenGen

https://community.acer.com/en/discussion/711471/ag3-605-predator-desktop-powers-off-and-re-starts-for-no-apparent-reason

Your Predator G3-605 desktop is a 2013 released desktop and allot of oem components could have deteriorated and are past their used by date that could contribute to the shutdowns and reboots of your desktop and its not only dust and felt of the fan(s). Go through the hardware systematically, starting with the following:

1. RTC/BIOS BATTERY- The memory battery (aka motherboard, CMOS, real-time clock (RTC), clock battery) is generally a CR2032 lithium coin cell. This cell battery has an estimated life of three years when power supply unit (PSU) is unplugged or when the PSU power switch is turned off.
2. RAM - Check each module if its faulty or the ram slots have corroded pins
3. PSU - Read this Signs Of Failing PSU - How To Identify A Dying Power Supply and be very careful with diagnosing a desktop PSU as you need to know what you are doing as if you don't, you will get electrocuted.
4. HUBS - if you have anything connected to a USB HUB through any USB ports, those peripherals could contribute to a short and the restart of your desktop,

Note: I speak from personal experience with a USB HUB that was connected to a USB port on my brand-new Nitro laptop, that did the same restarts and shutdowns that drove me crazy and I couldn't find out why my laptop was restarting and shutting down🤣and the culprit was a USB hub on a Zalman tablet cooler that I used that was shortening the USB port of the laptop out and making it shut down and reboot, so check all the above out on your old Predator G3-605 as anything on the main board also could be contributing to this shut offs.

Predator G3-605 mainboard change the bios battery, check the ram slot pins and 12pin and 4 pin power plugs if they have any corrosion and clean all these components out with a good circuitry cleaning spray like STANLEY Contact Cleaner or WD-40 Specialist Contact Cleaner that are the best circuitry cleaning spays. Good luck and hope this helps you out.

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