Unstable T500 with win 7, what to do?

[noeyewar]

My lenovo died after a BIOS update, so i i did send it back to lenovo to get i fixed.
When i got it back i decided to install win 7 x64, but i have issuses with the stability of the system.

It reboots randomly, sometimes with a bluescreen and some times not. Some times it has to try a few times before getting to a workable desktop.

I have tried to reinstall (the first installation i did install the turbomemory, the second i den't) but i does not seam to work.

Is this a hardware problem or software problem with one of the new win 7 drivers?

Here is one of the error messages, but i am not sure it is any help:
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.256.48
Locale ID: 1030

Additional information about the problem:
BCCode: 3b
BCP1: 00000000C0000005
BCP2: FFFFF80002DC3A19
BCP3: FFFFF880047C7AB0
BCP4: 0000000000000000
OS Version: 6_1_7600
Service Pack: 0_0
Product: 256_1


thnaks

kind regards, kenneth brodersen