Hi, I recently added an extra 1GB of RAM onto my system. I also loaded Microsoft Flight Sim X. Every time I ran FSX my pc would freeeze, requiring a system reset to recover the system. I also started getting a lot of Blue Screen instances. The first of these occurred during a routine defrag and gave the following:

STOP: 0x00000024 (0x001902FE, 0xF78C2BBC, 0xF78C28B8, 0xF7B77467)
Ntfs.sys - Address F7B77467 base at F7B52000, Datestamp 45cc56a7

I tried to do a virus scan and the pc kept crashing before the scan completed, each time giving me a Blue Screen event.

I have now uninstalled FSX and removed the additional 1GB of RAM. I ran a virus scan and got the following message:

Virus Name: Win32\Harnig!generic
Location: C:\WINDOWS\fd.exe<loadadv703.exe>

I am using CA Anti-Virus Ver 8.4.0.24

My PC is a home built system running Windows XP Home Edition with SP 2

My virus software does not provide any apparent fix for the Harnig infection. Can you offer any advice please?

Regards
Andy