Usually if there is any issue with the processor (bent pins, faulty CPU) the PC just simply wont work. It will power on, but you wont go anywhere. You wont get any POST beeps, you wont get anything on your screen. It will just sit there. But they dont go bad oftem. Of the probably 2000 computers I have worked around in the last 6 years I have only seen a processor related problem once.
But this isnt always the case. Sometimes you do get symptoms like you are getting now, so I wouldn't rule out the bent pins as your problem. The only thing is the symptoms you are describing could be other things as well.
The Hard drive was brought up earlier, which is probably the most common reason for issues like the ones you described, and this is probably the first thing I would look into. Check your windows error logs as described earlier and see if you are getting any hard drive read errors under the "Hardware" logs. If you are it's a good chance that is your problem.
Power is also another possibility. The error code 64, as you described, has to do with the CPU on your particular board. If it was your pins, I would think it would throw that error more often than once as once you have the CPU and the heat sink on the socket those pins aren't going to move around. I think if your pins were the problem, you would be getting that error more consistently. I could be wrong of course, I have never dealt with a bent pin issue (knocks on wood).
Power, on the other hand, can do crazy things to a computer. A PSU that is not providing enough juice it can cause memory errors, CPU errors, intermittent hard drive detection errors, etc... Normally if I come to an issue that I cant quite narrow down the problem point, it ends up being the power supply. It's gotten to the point that testing the PSU is the first thing I do when I'm troubleshooting a hardware problem, just to be sure it's operating within spec.
Buy/borrow a Power supply tester, they go for about 20 bucks depending on what you get and are very handy troubleshooting tools. Make sure your voltages are all good. If they aren't, replace.
When it comes down to it though, I would probably end up looking for a new motherboard sometime soon anyway. Bent pins can mean the difference between a high quality motherboard and an expensive piece of techie garbage. Not to mention the slight chance of damaging your CPU.