Explorer Error Stack_Hash

[the.freak]

I recently got myself 3 GB of DDR1 RAM but I'm having trouble with explorer with the Stack_hash error everytime I try to delete smthng ... Y is that? I tested the Ram with MemTestx86 Available on Hiren BootCD v9.2 and got a 100% Pass ... BUt when I tried a different Ram Test Sof I got a total of 20 000+ Errors ... How Come ?

Problem signature:
Problem Event Name: APPCRASH
Application Name: Explorer.EXE
Application Version: 6.0.6000.16386
Application Timestamp: 4549b091
Fault Module Name: StackHash_18e0
Fault Module Version: 6.0.6000.16386
Fault Module Timestamp: 4549bdc9
Exception Code: c0000374
Exception Offset: 000af1c9
OS Version: 6.0.6000.2.0.0.256.1
Locale ID: 1033
Additional Information 1: 18e0
Additional Information 2: 8dac5496cec4e3c10ec7038e676d86fb
Additional Information 3: 973d
Additional Information 4: 94546173adb48074b3112092e7d33b8a

CPUz :

Plz I need Help !!!!

 

[Tmagic650]

What are your system specs and location? Please update your User Profile to include this info... Then we can get down to business. We can't even begin to guess what system this is. Can you understand?

 

[the.freak]

Done Profile Updated

 

[Tmagic650]

Location? Nice Motherboard, although it's getting a bit old now... What happens when you revert to the original memory configuration?