Sometimes bluescreen after startup

hi guys.
I have this gateway t-1616 that is working perfectly and has no problem.
but every now and then after windows vista loads (startup) I get
a blue screen with a tcp.sys error and windows is restarted and then
all work perfect for few days!

There is like a bluescreen then crash dump at the bottom that goes from 5% to 100% then the laptop restarts after that everything is alright for another few days then it happens again, kinda annoying


I was wondering if anyone else has this problem and if there is a solution to it?
here are details:
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 1033

Additional information about the problem:
BCCode: 50
BCP1: DE865B83
BCP2: 00000000
BCP3: 81C47841
BCP4: 00000002
OS Version: 6_0_6000
Service Pack: 0_0
Product: 768_1

Files that help describe the problem:
C:\Windows\Minidump\Mini121407-01.dmp
C:\Users\Francis laptop\AppData\Local\Temp\WER-97359-0.sysdata.xml
C:\Users\Francis laptop\AppData\Local\Temp\WER458B.tmp.version.txt

I kind of know what you mean but I usually find this happens before I've downloaded all the updates and hotfixes, which. usually you get through the update utility. If you want to check for yourself look here:
Microsoft Download Center: Windows Vista
I find once I've got all the available updates the occasional blue screen which you mention totally stops.
The only other thing I can suggest is to ensure everything is up to date in the driver department. That means Chipset, graphics and sound. Also run scans for spyware and virus's.
You can, rather than hunt down all the updates, install the beta version of the service pack for Vista. This contains all the updates released up to date. It will however place some text in the lower right hand corner of your desktop saying 'Evaluation copy'.
I use the beta and find Vista runs really smooth and for the most part error free. I've also got rid of the text on my desktop as that sort of thing bugs the hell out of me. Anyway if you want to use the beta go here:
Download details: Windows Vista Service Pack 1 RC Public Availability Program
Just to mention, the best way to install any service pack is to do so after a fresh install of the os then followed by the drivers and so on. This isn't critical though so if you don't feel like doing that don't worry.
If you've downloaded the beta and want to get rid of the writing now on your destop, go to this site, use the download and follow the instructions:
Patched user32.dll.mui to Remove Evaluation Copy Text on Desktop of Vista SP1 RC1 » My Digital Life

One last thing. The final release for the service pack is scheduled for early 08 with some rumours pointing to the first week in Jan', so if you can wait it'll save you some work but if your like me you'll do it just because you can....
Good luck