W2KPro-Memory Dump-ntoskrnl Problems

Run W2KPro updated to SP4, AdAware, SpywareBlaster, AVG, DSL with Linksys Router, SPF.
SPF tells me that ntoskrnl.exe is blocked from accessing the internet occasionally, but I have full internet access all the time - as needed. SPF applications show that ntoskrnl is allowed full access - see below:

This error with the ntoskrnl will show up whenever I try to access my printer - it was uninstalled and then re-installed with correct drivers. If I right click on the printer in the CP\Printers folder, I will get a blue screen with the following error code:

STOP: 0x0000001E (0x80000003,0x8045558,0x00000000,0xBBE8ACCC)
Kmode exception not handled.
Address 80455548 base at 80400000, Date Stamp 434ec59-ntoskrnl.exe
Beginning Dump of Physical Memory.
Physical Dump Complete. Contact your system Administrator or technical support group.

AVG says the system is clean, Ad-Aware found Trojan Downloader - removed; Panda online found a couple of items which were cleaned; Trendmicro found Brillian Digital - removed and cleaned. System is clean from these scans repeated and nothing found.

Ram memory is 766MB - 516 free; Swap is 3721MB - 3490 free; Virt mem 4488MB - 4002MB free; Mb is Intel D845PESV.

Ran Hijack This from its own folder and have the following log:

Is this log clean? Any ideas on what is causing the Physical Memory Dump or the ntoskrnl error? Note: Even if the printer is unplugged from the computer, clicking on it\Properties in the Control Panel will cause the same problem. I have already changed the printer cable to another known good cable with the same results.

Any more info required, will be supplied.

frums

Hopefully, I put this in the right area. Should I have made it 2 threads with the HiJackThis files on a separate thread?

frums

What I have done in addition to above post:

Completely removed the printer form the Printer folder in CP, rebooted. No problems noted. Can see other printers in folder and can check properties etc., on them - they are networked printers. Had replaced printer cable on this printer and tried different drivers, all to no avail. Just yielded ntoskrnl error and dump of memory. Tried the printer on another computer as local printer - installed ok and works great. Have checked the LPT ports on this puter using Device Mgr., all were ok, but uninstalled and re-installed all COM and LPT ports to make sure. Still made no difference on this puter. This puter will also print ok to all other network printers. This suggests to me that 1. the printer is ok; 2. the drivers are ok; 3. print sys / spooling are ok in the OS.
I have checked the pins on the printer port and they are ok and system does not display any error codes. This leaves me with the suspicion that maybe the physical printer port/mb may have a problem, but I am at a loss as to how to check that out without going through a lengthy install / uninstall process with other printers. Does anyone know of a way to physically check the printer port itself, or some software that will do this? Any info would be appreciated.

Also, would still like to have the Hijack log file looked at. Should I put this in another thread?

An answer to any of these questions would be appreciated.

frums

I realize I posted incorrectly in my first post, but did do the HijackThis log again in separate post and all is clean. Have tried the printer on other puters - no problems at all, with drivers, ports, memory, OS. Networked printers work ok from all computers on the network. The LPT port shows up ok with no problems, even uninstalled and re-installed with same result - puter says everything ok but installing the printer makes for the memory dump error / blue screen, even by just right-clicking to check properties. Also when printer folder is opened with this printer installed, get the ntoskrnl blocked message form the firewall which is Sygate Personal. Again this firewall never caused this problem before. Is there any way to check the actual LPT port to see if it has problems/motherboard problems? Is there such a thing like a loop back test or something to check the actual physical port? The motherboard is an INtel D845PESV, P4-2.4 LPT1 port is ECP Printer port, running W2KPro.
This printer has been working on this computer for over a year when suddenly this error started coming up.
This post has had quite a few views, hopefully someone has some suggestions or possible answers.

Thanks in advance,
frums