Have him run these online virus scanners:
http://www.pandasoftware.com/activescan/http://housecall.trendmicro.com/Is he using these basic security programs?
(They're all free.)
aČ freeewido security suiteAd-AwareSpybot S&DSpywareblasterSpywareGuardDownload them,
update them, and then run them.
These programs,
updated and
used regularly, will do a lot to keep your computer clean of spyware, trojans, keyloggers, browser hijackers, etc...
If the above programs don't help, here's the manual removal directions for
Ipoy32.exeI couldn't find any information on
mnhnz.dll, or
njajx.daf.
If he's still having problems with these files after doing this, I'd suggest he post a HijackThis log to be examined.
Read
How to post a HijackThis Log.
Please read, and follow, all directions carefully.Then, run a log, and post it in the
HijackThis forum,
at this link.
Do not, fix anything, yet.
A member, of the HJT Team, will help you out.
It may take a while to get a response, because the HJT Team are very busy.
Please, be patient, these people are volunteers. They will help you out,
as soon as possible.
NOTE:Once you have made the post,
please,
DO NOT make another post in the HJT forum, until it has been responded to by a member of the HJT Team. The first thing they look for, when looking for logs to reply to, is
0 replies. If you make another post, there will be
1 reply. The team member, glancing over the replies, might assume someone is already helping you out, and will not respond. So, just make your post, and let it sit there, until a team member responds. This way you will be taken care of, in the most timely manner.