BSOD and little freezes

Hello. I have BSOD and some freezes that does not seem to be in relation with the activity of the disks or CPU.

I have an ASUS W90 that came with Vista for one year and a half
I installed Windows 7 ultimate 64x Full retail recently

Thx in advance

A defective hardware device is the cause
See this for more information and possible fixes about this 0x124 hardware error
Stop 0x124 - what it means and what to try

Run the SFC tool SFC /SCANNOW Command - System File Checker

Code:

BugCheck 124, {0, fffffa8006abb038, b2000040, 800}

Probably caused by : hardware

Code:

BugCheck 124, {0, fffffa8006acb038, b2000040, 800}

Unable to load image \SystemRoot\system32\DRIVERS\intelppm.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for intelppm.sys
*** ERROR: Module load completed but symbols could not be loaded for intelppm.sys
Probably caused by : hardware

Thx for your very quick answers I will try these solutions !
Thx again.