I have a client pc, that is Windows 7 64-bit SP1. They complained about getting pop ups, initially thought it was spyware. However, after going on-site it is a an error of Windows Explorer has stopped working. I was able to copy combofix from a flash drive to the hard drive using cmd prompt...
64-bit
applicationfault
combofix
error
event log
explorer
explorer crashes
malware
malwarebytes
pc repair
safe mode
sfc
sp1
spyware
startup issues
system error
troubleshoot
windows 7