PC shuts off while doing normal work.

[inhumanerections101]

Hello everybody.Iv'e expirienced some wierd stuff with my pc last few days.It just shuts off while i game or do normal work.I checked the temperatures 50 for cpu (60 when gaming) and 40 for gpu (50-60) when gaming.I've reinstalled my OS,all is connected on usb ports,tested components for hardware failure and its all fine.Nothing is overclocked.
CPU: Core 2 Duo E8400 3.0ghz
GPU:GeForce MSI GTS 450 Cyclone edition (stock oc)
RAM:4GB of ddr2 memory

 

[Lutfij]

We will need more info, please include your ram's make and model as well as their population on the motherboard, motherboard, PSU and OS. Are you sure your BIOS as well as your device drivers are up to date? Are you on the latest drivers for your GPU? What sort of titles are you gaming on? It looks a lot like your PSU's at fault but we will need to know the rest of your specs before rounding it down. Also add a memtes86 for 10 passes and see if any errors come up.