Hi Ive been an avast user for awhile now but am new to forums…The problem is as follows 
“A problem has been detected and windows has been shut down to prevent damage to your pc.
A device driver attempting to corrupt the system has been caught. The faulty driver currently on the kernel stack must be replaced”
Tech info:
*** STOP: 0x000000C4 (0x00000081,0x86F0F748,0X0000000C,0X0000000)
dumping physical memory.
I downloaded MS tool for this problem if that will help
do you think, that this problem correspodns to avast someway?
i installed dreamwear for scool and i believe its drivers corrupted my kerio firewall drivers…
here is another msg i got
fdrv.sys+ … thats close anyway,i checked google and its a kerio driver
sorry dreamweaver
I am pretty sure Dreamweaver has nothing to do with this problem since it’s a simple application and it doesn’t deal with your system files at all. What is the problem most likely is Kerio firewall because it is well known that it causes a lot of headaches to many users. Besides, its GUI is full of bugs as well.
Try uninstalling it, completely cleaning your system of every single Kerio trace, restart your system few times when needed, and install some other firewall. There is a bunch of good and in a matter of fact, a lot better firewalls out there. You’ll be protected even better. Just check Matousec leaktest page for tests:
http://www.matousec.com/projects/windows-personal-firewall-analysis/leak-tests-results.php
Kerio is listed as Sunbelt Personal Firewall and it is ranked pretty low on the list as poor.
Try what I suggested and post back.