Question BSOD and MemTest no error

[crobix]

i just added 4Go, and i got BSOD and MemTest just found anithings.
BSOD Errors :

• IRQL NOT LESS OR EQUAL
• MEMORY MANAGEMENT
• DRIVER OVERRAN STACK BUFFER
• CRITICAL STRUCTURE CORRUPTION
• KERNEL SECURITY CHECK FAILURE

I don't understand ...

 

[CountMike]

Memory related BSODs can also be caused by Page/Swap file on the disk.