Is my CPU still good?

wxlf9

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Jan 5, 2011
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My computer won't boot. Here's story.

I built a new AMD system and installed Win 7. All went and ran well. I then noticed that the stock CPU fan was too noisy, so I replaced it with a new HSF. In the process of doing so, two things happened (see below), and now the system won't boot, and I don't know if the CPU is till good. So please help!

What happened when replacing the HSF:
1. I accidentally bent a few pins on the CPU. I then straightened them using an anti-static tweezer.
2. In the rush to find out if my CPU is still working, I turned the power on without the HSF. It lasted under 20 seconds, but I noticed that the CPU is extremely hot when I touched it.

What tests I have done so far:
1. CPU installed, no memory installed: system makes three long beeps upon powering up. -- Is this an indication that the CPU is still good?
2. CPU installed, 1, or 2 or 3 or 4 memory sticks installed: system won't produce any sound, and won't boot either.
3. CPU not installed, Memory installed: no sound.

Other facts:
1. Using on-board video.
2. The 4 LED lights for CPU Phases are all lit fine.

Thanks in advance for any help you can provide.
 

wxlf9

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Jan 5, 2011
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I went through the sticky before posting here :).

The mobo (MSI 785Gm-E51) manual doesn't say anything about the beep code. I searched online, and found that the three long beeps usually mean some memory issue, which is exactly as-expected in my case because it only happened when no memory was installed.

I read somewhere on this site (see link below) that if long beeps for memory issues can be heard, it means the CPU is still good -- i.e. it's still working to look for the RAM! If this is true, then what could be my problem?

http://www.tomshardware.com/forum/259219-28-fried

 

wxlf9

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Jan 5, 2011
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get a magnifying glass and check for motherboard damage like blown capacitors or similar type damage.
sounds like cpu is dead now or the motherboard.

Thanks for the suggestion.

It's probably the easiest to just get a new cpu and see what happens. I am kinda reluctant to do so because according to the link below, the fact that the system still makes long beeps means the CPU and mobo are both working --

http://www.tomshardware.com/forum/259219-28-fried

What do you think? Any other tests that I can do?
 

banthracis

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So it's down to Mobo, CPU or much less likely, bad PSU.

Bad wiring is also a possibility. Try bread boarding the build.

As for the whole BIOS thing, technically as long as the CPU can exit reset mode you can get a beep code.

Unfortunately, I don't know enough about AMD architecture to tell you if their current CPU's can exit reset mode allowing beep codes, but be incapable of executing higher level instructions.