Flv Files Problems

Explorer does not play any files, it is a file manager and the shell. What program are you using to play .flv files?

You can try this, it plays more or less everything and is self-contained, it does not normally require that you install extra codecs etc.

VideoLAN - Official page for VLC media player, the Open Source video framework!

If you are having problems with explorer itself, then check first whether you have any malware on your system;

http://www.malwarebytes.org/

Download it and run a full scan. If it finds anything, post the log here.

Regards....Mike Connor

If strange things start happening on anything at all, then scan your system for malware immediately, before you do anything else. This might allow you to save the system.

If you have malware on your system, then it is more or less impossible to troubleshoot various things.

You already found malware on your system;

Folder Problem

and according to the log you posted you only ran a quick scan and did not remove the malware;

Windows 6.1.7600
Internet Explorer 9.0.8112.16421

6/4/2011 1:15:35 πμ
mbam-log-2011-04-06 (01-15-29).txt

Scan type: Quick scan
Objects scanned: 163649
Time elapsed: 3 minute(s), 43 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 7
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 6

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\JCFSE7V7Z1 (Trojan.FakeAlert) -> No action taken.
HKEY_CURRENT_USER\SOFTWARE\JP595IR86O (Trojan.FakeAlert) -> No action taken.
HKEY_CURRENT_USER\SOFTWARE\NtWqIVLZEWZU (Trojan.FakeAlert) -> No action taken.
HKEY_CURRENT_USER\SOFTWARE\SMH2B46TDP (Trojan.FakeAlert) -> No action taken.
HKEY_CURRENT_USER\SOFTWARE\Z30KYPG3WS (Trojan.FakeAlert) -> No action taken.
HKEY_CURRENT_USER\SOFTWARE\ZE18MW23GY (Trojan.FakeAlert) -> No action taken.
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\ (Hijack.Zones) -> No action taken.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
c:\Users\Public\documents\Server\admin.txt (Malware.Trace) -> No action taken.
c:\Users\Public\documents\Server\server.dat (Malware.Trace) -> No action taken.
c:\Windows\hosts (Trojan.Agent) -> No action taken.
c:\Windows\Tasks\{22116563-108c-42c0-a7ce-60161b75e508}.job (Trojan.Downloader) -> No action taken.
c:\Windows\Tasks\{35dc3473-a719-4d14-b7c1-fd326ca84a0c}.job (Trojan.Downloader) -> No action taken.
c:\Windows\Tasks\{bbaeaeaf-1275-40e2-bd6c-bc8f88bd114a}.job (Trojan.Downloader) -> No action taken.

There is no point in trying to fix things once you have been infected like that, you will not normally be able to find the cause of the problem, and even if you can, there is no knowing what other damage has been done.

Regards....Mike Connor

OK. That's good. Unfortunately, removing the malware does not automatically repair any damage it did. The only sensible option in such a case is to re-install your system.

Trying to troubleshoot the damage done by the malware can take a very long time and is rarely successful.

Regards....Mike Connor