Reasons. There is no "do this" cure so I would remove the case cover, dust it out, check fans and heatsinks for clogged airways, look at the capacitors for signs of bulging or leaking and possible fit a new power supply of 100 more Watts since that degrades with time. Then back to testing.
The spyware issues are quite annoying so try EWIDO from download.com
my computer uses a athlon 1800+ chip 512 sdram
geforce 4 mx400 graphics card creative 1024 sound card. i connect to the internet via a realtek 10/100 ethernet card. i use kerio firewall and nod32 antivirus.
i have had this configuration for 2-3 years without any problems. i am running xp pro with service pack 2.
i have recently started getting BSOD errors, i only get these whilst browing the internet (different sites).
driver irql not less or equal too
mentions afd.sys gives an address F1FB97FC base f1FAcooo datestamp 41107EB5
then droceeds to dump memory then restart.
there seems no pattern to this it can happen after a few minutes then not again for days.
any ideas what is going on?