Posted 16 November 2010 - 06:02 AM
This is my first posting - please be kind.
Over the past few days I have been having problems with network connectivity - after a few minutes (or sometimes, longer - I would loose network connectivity completly (wired)but everythig else is ok - or, sometimes I have a BSOD error (IRQL_NOT_LESS_OR_EQUAL Stop 0x000000D1) on my network driver (SISNIC.SYS).
Having installed SP3 for XP recently I suspected I needed a new network driver - this was downloaded from the SIS site and appeared to install correctly (but the setup never seemed to complete) - this changed none of the symptoms, but the name of the network driver changed to SISNICXP.SYS when I got a BSOD.
I suspected a failure of the motherboard ethernet harware and was preparing to replace it with a PCI card - I could not remove the network driver, beliving it to be locked in by AVIRA - I removed that (virus check clean first) - still can not remove the driver - however - Firefox now redirects a 'Jumped' tab on google links. MBAM finds nothing from that partition (and a spare partiton I have for emergencies) and AVIRA does not find anything from the emergency partition. I have access to another computer so have disconnected the suspect computer from the network and I am using that for this post.
I know I have a virus/malware but, when both my usual tools, failed to find it I thought it was time to seek further help hence this post. What I don't know is whether I have a hardware issue with my network hardware - or failed attempts to further infect my pc are causing the lost connectivity / crashes.
HELP - where do I go from here.