PC reboots itself

I am receiving the message 'The computer has rebooted from
a bugcheck.' in the event log after my PC boots itself.
It didn't begin until I loaded software from pdf995.com.
Of course I removed the software and scoured the registry
to remove any reference but it hasn't clear up.

The remainder of the message is 'The bugcheck was:
0x0000001e (0xc0000005, 0xbfe9bd16,
0x00000000,0x00000000). Microsoft Windows 2000 (v15.2195).
A dump was saved in: C:\WINNT\Minidump\Mini103003-10.dmp.'

Any ideas?

Thanks for any help