The last two DAYS or so, my programs are dropping from full screen to window mode at random times. Any ideas?

I've added no new programs in that time.

thanksYou MIGHT want to start by running a full system scan with BOTH your anti virus utility AND MalwareBytesyes, I've DONE that already.Need...more...info...gasp 

Operating system / antivirus & antispyware protection / service packs installed / when did it start happening / did it ever work right / installed any new software?

Alan <><  You might want to post a hijack this log in the malware forum here.Hijack log:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 2:25:20 PM, on 11/13/2009
Platform: Unknown Windows (WinNT 6.01.3004)
MSIE: Internet Explorer v8.00 (8.00.7100.0000)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\system32\taskhost.exe
C:\Windows\Explorer.EXE
C:\Windows\System32\Ctxfihlp.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\AVG\AVG9\avgtray.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe
C:\Program Files\Pando Networks\Media Booster\PMB.exe
C:\Windows\SYSTEM32\CTXFISPI.EXE
C:\Program Files\Common Files\Ahead\Lib\NMIndexStoreSvr.exe
C:\Users\Mine\Downloads\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://home.live.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O2 - BHO: (no name) - {02478D38-C3F9-4efb-9B51-7695ECA05670} - (no file)
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG9\avgssie.dll
O2 - BHO: Search Helper - {6EBF7485-159F-4bff-A14F-B9E3AAC4465B} - C:\Program Files\Microsoft\Search Enhancement Pack\Search Helper\SEPsearchhelperie.dll
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: Windows Live Toolbar Helper - {E15A8DC0-8516-42A1-81EA-DC94EC1ACF10} - C:\Program Files\Windows Live\Toolbar\wltcore.dll
O3 - Toolbar: (no name) - {CCC7A320-B3CA-4199-B1A6-9F516DD69829} - (no file)
O3 - Toolbar: &Windows Live Toolbar - {21FA44EF-376D-4D53-9B0F-8A89D3229068} - C:\Program Files\Windows Live\Toolbar\wltcore.dll
O4 - HKLM\..\Run: [CTxfiHlp] CTXFIHLP.EXE
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [NetFxUpdate_v1.1.4322] "C:\Windows\Microsoft.NET\Framework\v1.1.4322\netfxupdate.exe" 1 v1.1.4322 GAC + NI NID
O4 - HKLM\..\Run: [NeroFilterCheck] C:\Program Files\Common Files\Ahead\Lib\NeroCheck.exe
O4 - HKLM\..\Run: [AVG9_TRAY] C:\PROGRA~1\AVG\AVG9\avgtray.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\RunOnce: [Malwarebytes' Anti-Malware] C:\Program Files\Malwarebytes' Anti-Malware\mbamgui.exe /install /silent
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [Pando Media Booster] C:\Program Files\Pando Networks\Media Booster\PMB.exe
O9 - Extra button: Blog This - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Blog This in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O13 - Gopher Prefix:
O16 - DPF: Web-Based Email Tools - http://email01.secureserver.net/Download.CAB
O16 - DPF: {02BF25D5-8C17-4B23-BC80-D3488ABDDC6B} (QuickTime Object) - http://appldnld.apple.com.edgesuite.net/content.info.apple.com/QuickTime/qtactivex/qtplugin.cab
O16 - DPF: {0E5F0222-96B9-11D3-8997-00104BD12D94} (PCPitstop Utility) - http://www.pcpitstop.com/betapit/PCPitStop.CAB
O16 - DPF: {75A6AEA3-F26E-4608-AE9B-8DA78C87576E} (Wizard101GameLauncher) - https://kingsisle.hs.llnwd.net/e1/static/themes/wizard101A/activex/Wizard101GameLauncher.CAB
O16 - DPF: {94E5218F-9737-4FC2-8457-567B1FF23DC0} (diskhealth Class) - http://utilities.pcpitstop.com/Nirvana/controls/DiskMD3Ctrl.dll
O16 - DPF: {A553720A-BFED-4EA4-A71F-7EFCA690A1F7} (PCPitstop AntiVirus) - http://utilities.pcpitstop.com/Nirvana/controls/pcpitstopAntiVirus.dll
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O16 - DPF: {FFB3A759-98B1-446F-BDA9-909C6EB18CC7} (PCPitstop Exam) - http://utilities.pcpitstop.com/Nirvana/controls/pcpitstop2.dll
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG9\avgpp.dll
O20 - AppInit_DLLs: avgrsstx.dll
O23 - Service: AVG FREE E-mail Scanner (avg9emc) - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG9\avgemc.exe
O23 - Service: AVG Free WatchDog (avg9wd) - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG9\avgwdsvc.exe
O23 - Service: Creative Audio Engine Licensing Service - Creative Labs - C:\Program Files\Common Files\Creative Labs Shared\Service\CTAELicensing.exe
O23 - Service: Creative Audio Service (CTAudSvcService) - Creative Technology Ltd - C:\Program Files\Creative\Shared Files\CTAudSvc.exe
O23 - Service: NBService - Nero AG - C:\Program Files\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe
O23 - Service: NVIDIA DISPLAY Driver Service (nvsvc) - NVIDIA Corporation - C:\Windows\system32\nvvsvc.exe
O23 - Service: Yahoo! Updater (YahooAUService) - Yahoo! Inc. - C:\Program Files\Yahoo!\SoftwareUpdate\YahooAUService.exe

--
End of file - 6424 bytes
malwarebytes log

Malwarebytes' Anti-Malware 1.41
Database version: 3160
Windows 6.1.7100

11/13/2009 2:23:53 PM
mbam-log-2009-11-13 (14-23-53).txt

Scan type: Full Scan (C:\|)
Objects scanned: 600272
Time elapsed: 3 hour(s), 19 minute(s), 1 second(s)

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

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)
Quote from: Allan on November 13, 2009, 07:46:38 AM

You might want to post a hijack this log in the malware forum here.