I hope this helps someone!
I have windows 7 home premium 64 bit and i tried updating comodo firewall w/ defense + 3.14 to comodo firewall w/defense + 4.0. Comodo found no updates so then i tried uninstalling comodo 3.14 and installing comodo 4.0. After i uninstalled comodo 3.14 and tried to restart to finish the uninstall i got a blue screen so i turned off the pc and went to safe mode. I saved this log…
DRIVER_IRQL_NOT_LESS_OR_EQUAL
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033
Additional information about the problem:
BCCode: d1
BCP1: 0000000000000010
BCP2: 0000000000000002
BCP3: 0000000000000000
BCP4: FFFFF880014355D6
OS Version: 6_1_7600
Service Pack: 0_0
Product: 768_1
Files that help describe the problem:
C:\Windows\Minidump\031110-33805-01.dmp
C:\Users\Owner\AppData\Local\Temp\WER-55832-0.sysdata.xml
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Then i restored my pc to the point before i uninstalled comodo 3.14 and i looked at my updates for windows. I had 3 optional updates and they were:
Atheros - Network - Atheros AR8132 PCI-E Fast Ethernet Controller
Atheros Communications Inc. - Network - Atheros AR5B93 Wireless Network Adapter
Office Live add-in 1.4
So i installed Atheros - Network - Atheros AR8132 PCI-E Fast Ethernet Controller and Atheros Communications Inc. - Network - Atheros AR5B93 Wireless Network Adapter updates and was then able to uninstall comodo 3.14 and install comodo 4.0 without any blue screens. I hope this helped!