Computer started shutting down months ago. But not completely random.

[Monkeypatches]

I can't figure out why my computer shuts down, and don't have the money to take it to a repair shop.
 This started some months back, but I've had the computer for a lot longer.  My brother built the PC.
I completely unhooked everything, and put all the parts back into the case.  Same problem.

The oddity of this problem is that, I can surf the web just fine.  But I enjoy programming with my PC, and when I open my C# 2010 express IDE, my computer will instantly shut down, or shut down within minutes of running it.

I tried complete reformat of windows, same problem.  And I have a virus scanner.. so it's not a virus.
I've cleaned out my computer with canned air.

Currently all I have hooked up is:  motherboard, power supply, hard drive, ram and video card.

I don't know a whole lot about hardware, but here are some of my stats, that I'm reading off a program called AIDI64:

CPU Type: Dual Core AMD 64 X2 5200+
Motherboard Name:  Biostar NF4U AM2G
Video Card:  nVidia Geforce 9400 GT (i temp put this one in, to see if video card was the problem.. still shuts down)
Ram:  two sticks, 2gb each.

If you need more stats (and you probably will) let me know what you need.   Thanks, I appreciate any help or advice you can give.

[patio]

DLoad install and run SpeedFan....
Post a screenshot of your temps...1 at idle...and 1 under load.

[Monkeypatches]

-- speed fan screenshot

I also have this program called Aida64 that lets me do stress:

Here is during stress, and after:
after the stress test:

During 100% stress test, my computer does not shut down.  But if I run C# IDE, it would probably shut my computer down within two minutes.. like being unplugged.  But I can start it back up instantly with the power button.

[patio]

127C seems pretty  high ...even for an AMD...check your Manual for normal operating temps.
You may be replacing the CPU fan assembly.

[Monkeypatches]

It always says 127 and never changes.. even when I first start it.. I've read this might be an error in reading the sensors or something?  Not sure.

[patio]

Know anyone with a temp probe ? ?

Just remembered...try Speccy...see what readings you get there....Free as well.

[Monkeypatches]

Speccy says for CPU:

Code: [Select]

CPU
AMD Athlon 64 X2 5200+
Cores 2
Threads 2
Name AMD Athlon 64 X2 5200+
Code Name Brisbane
Package Socket AM2 (940)
Technology 65nm
Specification AMD Athlon(tm) 64 X2 Dual Core Processor 5200+
Family F
Extended Family F
Model B
Extended Model 6B
Stepping 2
Revision BH-G2
Instructions MMX (+), 3DNow! (+), SSE, SSE2, SSE3, AMD 64
Virtualization Supported, Disabled
Hyperthreading Not supported
Fan Speed 3169 RPM
Bus Speed 201.0 MHz
Rated Bus Speed 1005.2 MHz
Stock Core Speed 2700 MHz
Stock Bus Speed 200 MHz
Average Temperature 28 °C
Caches
L1 Data Cache Size 2 x 64 KBytes
L1 Instructions Cache Size 2 x 64 KBytes
L2 Unified Cache Size 2 x 512 KBytes
Core 0
Core Speed 2613.5 MHz
Multiplier x 5.0
Bus Speed 201.0 MHz
Rated Bus Speed 1005.2 MHz
Temperature 25 °C
Thread 1
APIC ID 0
Core 1
Core Speed 2714.1 MHz
Multiplier x 9.0
Bus Speed 201.0 MHz
Rated Bus Speed 1005.2 MHz
Temperature 31 °C
Thread 1
APIC ID 1

[patio]

Temps are fine...SpeedFan must be mis-reporting it.

Try MemTest next to rule out RAM as a culprit...let it run at least 1 hour.

Also see how much free space is on thet HDD.

[Monkeypatches]

I was a little impatient, took the ram out, it seemed a little dirty in the slot I blew it out.
I put in new RAM and it hasn't shut down once yet.   I think it might be solved!  Thanks soooo much Patio!!!!

I am going to run a test on the memory later, I put it in another computer and it's not having any problems either.  So maybe it was the dust on ram? Either way it is working.... I just can't believe it.. after all this time   I'll post how the memory test came out in a bit.

[Monkeypatches]

Nevermind.. my computer is still shutting down.  It just took awhile longer that time.
So, I guess it can't be the memory either.  I have totally different ram cards in the motherboard.

[Monkeypatches]

Someone said it is my power supply at fault:
Voltage
   CPU CORE   1.376 V
   MEMORY CONTROLLER   1.504 V
   +3.3V   3.264 V
   +5V   5.027 V
   +12V   11.840 V
   -12V   -7.680 V
   -5V   -4.736 V
   +5V HIGH THRESHOLD   4.946 V
   CMOS BATTERY    3.360 V

Does this look ordinary?

[Monkeypatches]

It is not the power supply, I replaced it and same problem.  I've isolated it to two possible issues:

CPU or Motherboard.  How do I go about seeing which one is the culprit?