Q: Computer turns off while playing 3D games About a week ago, my computer started to randomly turn off while I was playing 3D games. I initially suspected temperature issues. I have SpeedFan installed, idle PC temp is 99C and running a game about 120C. I opened the case to clean the filter/CPU heatsink/fan blades, aerosol dusted, and ensured that all fans were working properly and cable connections were snug. When the issue persisted my next suspicion was temporary voltage drops (I live on the top floor of older 2 family house, bad wiring is probable). I have bought an UPS, charged the battery overnight and hooked everything up. Now, when I turn on my PC the UPS alarm kicks on for a few seconds as soon as the Windows desktop appears. When I run a game, as soon as I get past the menus to actual 3D content, the UPS alarm kicks on and after about 30 seconds the PC turns off. What does this mean exactly? Troubleshooting tips?
Relevant specs:


*

*700W Rosewill PSU

*GIGABYTE GA-X58A-UD3R

*GeForce GTX 470 (550W PSU minimum)

*Intel Core i7 3Ghz quad core CPU

*Cooler Master Hyper 212 CPU heatsink


A: i'm going to blame the power supply.
The UPS is likely warning you about excessive current draw.
i can't imagine that the UPS is not able to handle a regular computer - so i'm going to blame the power supply for drawing too much (short?)
