"gets to the point where I can select how I would like to boot, I use boot windows normally, safe mode or last known good configuration and on it goes" ??? I'm not familiar with that being a normal boot item.
I think that only comes up when your system is having problems.
You told us nothing about the system that might help. What mobo, what CPU, what speed and type of memory? AMD CPU's and the FSB settings totally different than those for Intel and both differ with versions. What operating system, what were you doing when this behaviour started? How old is the system, how long did it work perfectly. When it worked perfectly what speed did it show???
The mobo detections sure look like some kind of memory problem. [could be CPU, but?]. What do you have set for the memory in the BIOS, is "by SPD" enabled or are you setting the CAS and other settings. Possibly you are using settings that the memory can't support and thus get variations in speed as the memory works correctly for a few cycles then can't keep up.
Okay, here's the problem. Computer has begun to restart during the boot sequence. The memory test passes, gets to the point where I can select how I would like to boot, I use boot windows normally, safe mode or last known good configuration and on it goes. At this point the windows loading screen appears, the little slider bar goes across a couple of times and then a flash of blue screen and back to the boot sequence.
I've had each ram module installed separately and nothing changes so I'm guessing it's not the ram. Motherboard was the original suspect but upon replacement still no go. Video card is fine. I tried another PC's HD in it and same problem.
What this leads me to believe is the CPU is probably gibbled. The new MB fluctuates detection between 2600 2000 and 1150 or something. I don't have an extra Athlon XP to test so from the information given would the CPU seem to be the culprit?
If any more details are required let me know. What do you think is the problem?