Is my CPU broken and what can I do about it?

[Atlasion]

Hi there,

I believe I posted about this before, but now I know more about the problem so it may be worth another shot.

First off, computer specs:
CPU: AMD Athlon 64 X2 6400+ (dual core)
Motherboard: ASUS M2N MCP61
RAM: DDR2, 3GB (x3 1GB sticks)
Graphics card: GeForce GTX 460 (recently upgraded from a GeForce 8800 GT, problem occured before and after upgrade)
Windows XP, SP3

The problem: Games (Modern Warfare 1 and 2, Black Ops, FFXIV) crash after a little while of play, giving an error code such as 0xc000000d or something similar. Sometimes it's just the game that crashes, other times I get a full bluescreen and restart.

What I've done: After googling the error codes and trying to follow some instructions, I have:
Ensured drivers up to date
Run Ccleaner to clear registry
Run Windows Repair
Run Memtest86 (about 10 passes, no errors)
Complately reformatted Windows
Run SeaTools diagnostic test for harddrive, no errors
Run Prime95 to test CPU: Core one fails after a few minutes, core two lasted about 20 before I aborted test.

So I figured it's my CPU that's the problem. I tried playing FFXIV (which seems tobe the worst effected) and changing core affinity. As expected, when set to core one affinity it crashed. When I set it to core two affinity it seemed to run fine for about 2 days. Now when I set it to core two affinity, however, it still crashes after a while of gameplay.

So my question is: Is there any way this can be fixed without replacing CPU? If not, is it definitely the CPU that's the problem/are there any other tests I can run to figure it out?

[rog]

Pretty sure you're going to need to replace it.

[Atlasion]

If it needs to be replaced, does anyone know about compatibility between newer CPUs and my motherboard?

My Motherboard only supports AMD socket AM2 Athlon 64 X2, Athlon 64 FX, Athlon 64, Sempron (reading from the back of the box here). I found a nicely priced CPU that's an Athlon 64 x2 7850, but requires AM2+ socket (CPU here: http://www.scan.co.uk/products/amd-a...-cache-95w-oem). Now I've read that AM2+ CPUs are compatible with some AM2 sockets, but maybe not all. Is there any way to know for sure?

[CoronA1979]

My first suggestion would be to go into the BIOS and bump the VCORE on the CPU up a tad and see if the problem persists.

[Crowort]

Have you checked the temps of the CPU while running prime? While CPUs can fail they normally don't. Have you tried setting the bios to defaults? There is a chance it it the motherboard too, you can't really tell if it is one or the other without replacing one.

[Olo401]

If it needs to be replaced, does anyone know about compatibility between newer CPUs and my motherboard?

My Motherboard only supports AMD socket AM2 Athlon 64 X2, Athlon 64 FX, Athlon 64, Sempron (reading from the back of the box here). I found a nicely priced CPU that's an Athlon 64 x2 7850, but requires AM2+ socket (CPU here: http://www.scan.co.uk/products/amd-a...-cache-95w-oem). Now I've read that AM2+ CPUs are compatible with some AM2 sockets, but maybe not all. Is there any way to know for sure?

AM3 CPUs are backwards-compatible with AM2/AM2+ boards - the newer CPUs use the same socket (but has one less pin than AM2+) and has an onboard DDR2/DDR3 memory controller so it can support both speeds. You will probably need to upgrade your BIOS to the latest version before swapping in an AM3 CPU tho.

[Mafai]

Hi there,

I believe I posted about this before, but now I know more about the problem so it may be worth another shot.

First off, computer specs:
CPU: AMD Athlon 64 X2 6400+ (dual core)
Motherboard: ASUS M2N MCP61
RAM: DDR2, 3GB (x3 1GB sticks)
Graphics card: GeForce GTX 460 (recently upgraded from a GeForce 8800 GT, problem occured before and after upgrade)
Windows XP, SP3

The problem: Games (Modern Warfare 1 and 2, Black Ops, FFXIV) crash after a little while of play, giving an error code such as 0xc000000d or something similar. Sometimes it's just the game that crashes, other times I get a full bluescreen and restart.

What I've done: After googling the error codes and trying to follow some instructions, I have:
Ensured drivers up to date
Run Ccleaner to clear registry
Run Windows Repair
Run Memtest86 (about 10 passes, no errors)
Complately reformatted Windows
Run SeaTools diagnostic test for harddrive, no errors
Run Prime95 to test CPU: Core one fails after a few minutes, core two lasted about 20 before I aborted test.

So I figured it's my CPU that's the problem. I tried playing FFXIV (which seems tobe the worst effected) and changing core affinity. As expected, when set to core one affinity it crashed. When I set it to core two affinity it seemed to run fine for about 2 days. Now when I set it to core two affinity, however, it still crashes after a while of gameplay.

So my question is: Is there any way this can be fixed without replacing CPU? If not, is it definitely the CPU that's the problem/are there any other tests I can run to figure it out?

I've recently been experiencing stop screens with random codes as well, I reset my BIOS to default and it fixed my problems. I would lean towards bad overclock.

[Atlasion]

Bumping this thread to ask another question:

I eventually tried reseting my BIOS, but the problem still occurs. So it looks like its either the motherboard or the CPU that's the problem. So my question is: is there any way to work out which one it is? Or do I just have to take a guess?