Blue Screen of Death - HELP!!

I tried researching this online, but haven't come up with anything to help so far. I just recently started getting the BSOD with different messages.

The first one says:
The system is attempting to access memory beyond the end of the allocation. This may be a driver-system synchronization issue.

Technical information:
*** STOP: 0x000000CD (0x8775F000, 0x00000001, 0x804EC83D, 0x00000000)

and...

IO SYSTEM VERIFICATION ERROR IN FILTNT.SYS (WDM DRIVER ERROR 203) [FILENT.SYS+d1a3 at EEF581A3]

I haven't installed any new software that I know of and what was downloaded I uninstalled. I also have gotten some message like:
A problem has been detected and Windows has shut down to
prevent damage to your computer. It states it is a driver or hardware
or software problem and that I should disconnect devices to determine
what is wrong. The screen also says to disable BIOS memory options
such as caching and shadowing.

I have unchecked the automatic reboot option. I have gone in safe mode and also did the thing (I can't remember what it's called) with the driver scanner option. I am running Windows XP Professional version 2002 with Service Pack 2. I have an Intel Pentium 4, 2.80 GHz, 760 MB of RAM. I have the AVG antivirus, a Crap Cleaner, Outpost Firewall. I also have Spybot S&D installed and have run all of them with no results. I also have done a chkdsk and defrag, which have done their job also, but I am still getting these blue screens. Any advice would be appreciated.

 

Well, I verified unsigned drivers and it turned out they were from my AVG virus scanner!! So I disabled the drivers and then uninstalled the program. Now I'm going to find a replacement for it. Hopefully it will stop the BSOD.

Thanks.

 

I've heard of AVir causing this one but never AVG.
I think there must be something underlying this. Run a system check

start>run>typein
cmd
at the > prompt in the black screen which opens type
sfc /scannow (note double n)
Have your Windows CD handy.


Studio T