Computer random shutdown, new assembled computer

I just assembled a new computer with a brand new CPU, Motherboard, and new ram with 8 gigabytes of space. At first when my operating system had 32 bit, it took a while and then the computer would randomly turn off by itself, but I didn't notice because i wasn't there. Then I installed 64 bit and it went well for a while, I installed Steam, Skype, and restored a Minecraft server I've been hosting, and installed a game (Tomb Raider). So I finished installing Tomb Raider and booted it up and the computer randomly shutdown out of nowhere. I tried booting it back up and it shut down once it reached the desktop, and continued doing this despite me moving to different power sources around the house with the computer. I believe that I have a bad PCU (It holds 400 watts) and i am thinking of jumping up to 700 watts.

Am I doing the right thing or is there some other reason its shutting down at desktop?

Three things come to mind right off the bat:

1. Heat sink not installed properly
2. Power supply issues
3. RAM timing issues (set in BIOS)

Regards,
GEWB

Hi Thatguy1997,

In your original post you seem to be stating that your using a 400 Watt Power Supply. If this is the case then I would point my finger at the Power Supply straight away. Of course not knowing your full specs I cannot do so, therefore I recommend looking at the link below -

Power Supply Calculator

Assuming you have a 400 Watt Power Supply installed, and your calculations result in a wattage requirement greater than 400 Watts (highly likely), then the first step is to buy a quality Power Supply. I recommend at least 600 - 650 Watts for high end systems, but at any rate whatever the calculator returns + 50 should be adequate.

Good luck :)

Kind Regards,

Davo

Good luck, I hope that the PSU works out, your welcome with regard to the link :)

Thatguy1997 said:

edit: The computer booted up :) I'm sitting in the bios menu and looked at the temp and the processor has gone from 80 F to 100.4 F so maybe there is a heat problem. I am going to wait and see if it powers off by itself in the bios menu and ill tell more after the computer has shutdown or if it is able to remain still at the bios menu.

Update again. the CPU is staying at a stable temperature of 100.4 F, and the computer has yet to shut down.

Your temps are great for that CPU. Don't even start to worry until it is over 130F (=55C).

Regards,
GEWB

Yup, definitely a power supply problem, buying one with a higher wattage especially since i have a pretty high end desktop pretty much fixed the problem. ( I tested by running a bunch of processes over an hour to see if it would shut down)

I have researched a lot of these similar problems. I also have the ASUS M5A97 Motherboard and the AMD FX 6300 CPU and also experience random power offs under Windows 7.

I physically have to switch off the power to the PC and wait 30 seconds before the PC will power up again.

I definately think there is a prob with the ASUS and the AMD that is causing this problem.

I also had a 500W power supply and was running an MSI Radeo R9 270x 2G graphics card. I swapped over to an 850W power supply and again, the same problem occurs. It isnt power supply. My temps are all fine, system isnt under any load at all then for no reason, it just shuts off.