RAM frenzy

So my computer slowed down, nothing big. I started lagging on Maple, nothing big either. I crashed with a Kernel Stack Inpage Error, BSoD, uh oh.

So I did a bit of everything, cleaning up temp files, defragmenting, cleaning windows registry. Nothing really worked.

Symptoms:

• Slow startup (Performance tab in Windows Task Manager shows that the CPU usage randomly jitters to 60% areas, often times 100%).
  
• The same happens to heavy CPU use tasks (which ran fine before all this happened).
  
• BSoD, thought it hasn't happened more than twice.
  
• Freezing when opening Processes tab in Windows Task Manager during startup.
  
• Only happens on Windows XP Professional. My Windows 7 boots/runs like a feather.
  

One of the things I did involved checking on hardwares, so I ran a quick CPUZ check, this is what baffles me:

1./

 Spoiler

2./

 Spoiler

Both the RAM sticks are

 this model, CM2X1024-6400C4

.
I have no idea why it doesn't display Manufacturer, sometimes does display Manufacturer, some other times just pineapples everything up randomly (see: 13340 MBytes Module Size on a 1Gb RAM stick).

Halp? :[

EDIT: Moar info:

 CPU

 Mainboard

 Memory