Very, very strange problem

Hi!

Since I upgraded my PC from Intel E4500(OC'd), 3GB DDR2, and ASUS P5B-E to i5 2500K (no OC), 8GB DDR3, and ASUS P8P67Pro
my computer has started to shut down (hard reboot, w/o BSOD) when I use anything graphic card related. For example,
the computer works flawless in Safe Mode where I can surf and watch videos for hours, but I soon as I enter normal mode and watch
a video, start a computer game, or surf with GPU acceleration, it turns off.

I've reinstalled Windows, changed HDD, run Memtest86+ for 12h w/o errors, used one memory stick, changed motherboard, and underclocked my CPU. Nothing
works and I wonder if you guys think the reason is my PSU (Antec Smartpower 2.0 450W ~3y old), or my graphic card (HD4830, oddly used
with the same PSU in my pre-upgrade system)? :??:
7 answers Last reply
More about very strange problem
  1. Weird things happen when you use unsupported cpu's.
    http://support.asus.com/cpusupport/list.aspx?SLanguage=en&m=P5B-E&p=1
  2. I'm leaning more towards the graphics card being the problem, but it could be either -- you'd need to test with another graphics card or another power supply to find out which.
  3. You should get a new PSU anyway.
  4. ^ i would have to concur with the PSU being faulty. If the computer is literally turning off, it is most likely a power issue. Although you can get hard shutdowns if something is overheating and reaches shutdown temperature. Check your temps.
  5. popatim said:
    Weird things happen when you use unsupported cpu's.
    http://support.asus.com/cpusupport/list.aspx?SLanguage=en&m=P5B-E&p=1

    They sure do, but I'm not using my 2500k with my old P5B-E MB, read my first post again..

    Anonymous said:
    ^ i would have to concur with the PSU being faulty. If the computer is literally turning off, it is most likely a power issue. Although you can get hard shutdowns if something is overheating and reaches shutdown temperature. Check your temps.


    The CPU remains under 70C during 100% load. Regarding the GPU, the computer shuts down before it has a chance to reach load, but idle is 30C.
  6. Opps My Bad. I wasn't even going to ask how you got it to fit much less work. LOL

    You did connect the 6 pin pcie power cable right?
    Can you breadboard your old system back together and see if it works with this GPU and PSU?
  7. I have to agree with the folks who said "PSU"
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