Vista - Vista ultimaet causes blue screen on laptop

I had windows 2003 running on my laptop for many years, never had blue
sreen. Just upgraded to Vista last month, and on the average, I've been
getting 5 blue screens each day. Does anybody know how to resolve this
issue?

Here are the details:
Problem signature:

Problem Event Name: BlueScreen

OS Version: 6.0.6001.2.1.0.256.1

Locale ID: 1033

Additional information about the problem:

BCCode: 116

BCP1: 843C5510

BCP2: 8C221974

BCP3: C0000001

BCP4: 00000003

OS Version: 6_0_6001

Service Pack: 1_0

Product: 256_1

Files that help describe the problem:

C:\Windows\Minidump\Mini020609-03.dmp

C:\Users\Gilgamesh\AppData\Local\Temp\WER-348046-0.sysdata.xml

C:\Users\Gilgamesh\AppData\Local\Temp\WER6096.tmp.version.txt

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Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.0.6001.2.1.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: 116
BCP1: 86338510
BCP2: 8B20D720
BCP3: 00000000
BCP4: 00000002
OS Version: 6_0_6001
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\Mini022809-01.dmp
C:\Users\sasukekun\AppData\Local\Temp\WER-133630-0.sysdata.xml
C:\Users\sasukekun\AppData\Local\Temp\WERC8D.tmp.version.txt