Registry Write Privileges for Com port

When I clicked on advanced settings for com 1 I get the following message see PIC below
How do I get write privileges to see the settings. I was trying to see if the FIFO Buffer was checked or not. I was able to find it ( FIFO setting) in the registry but still wander why I don't have write privileges and how to change that. Thanks

 

Picture below? I see no picture.

Are you logged in with administrative rights?

 

I edited my post picture should be there.
Yes I am log in as administrator

 

You may have malware that is preventing the access. Nothing else springs to mind. How about posting a HijackThis 1.99.1 and letting the security experts take a look?

 

Sure:

Logfile of HijackThis v1.99.1
Scan saved at 9:07:39 AM, on 7/14/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\fixpro.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\taskman.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\Yahoo!\Antivirus\ISafe.exe
C:\WINDOWS\system32\CTsvcCDA.exe
C:\WINDOWS\system32\crypserv.exe
C:\WINDOWS\system32\drivers\dcfssvc.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\MsPMSPSv.exe
C:\PROGRA~1\Yahoo!\YOP\yop.exe
C:\Program Files\Yahoo!\Antivirus\CAVTray.exe
C:\Program Files\Yahoo!\Antivirus\CAVRID.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe
C:\WINDOWS\system32\ctfmon.exe
C:\PROGRA~1\Yahoo!\browser\ycommon.exe
C:\Program Files\Yahoo!\Antivirus\VetMsg.exe
C:\Program Files\Hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/cus.../sbcydsl/*http://www.yahoo.com/search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/ie/defaults/sp/sbcydsl/*http://www.yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://att.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://att.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://red.clientapps.yahoo.com/customize/ie/defaults/su/sbcydsl/*http://www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/cus.../sbcydsl/*http://www.yahoo.com/search/ie.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/ie/defaults/sp/sbcydsl/*http://www.yahoo.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://att.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/customize/ie/defaults/su/sbcydsl/*http://www.yahoo.com
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn3\yt.dll
F2 - REG:system.ini: UserInit=fixpro.exe,C:\WINDOWS\system32\userinit.exe,
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn3\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - :C:\PROGRA~1\SPYBOT~1\SDHelper.dll (file missing)
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\PROGRA~1\Yahoo!\Common\yiesrvc.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O2 - BHO: SidebarAutoLaunch Class - {F2AA9440-6328-4933-B7C9-A6CCDF9CBF6D} - :C:\Program Files\Yahoo!\browser\YSidebarIEBHO.dll (file missing)
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn3\yt.dll
O4 - HKLM\..\Run: [YOP] C:\PROGRA~1\Yahoo!\YOP\yop.exe /autostart
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [CaAvTray] "C:\Program Files\Yahoo!\Antivirus\CAVTray.exe"
O4 - HKLM\..\Run: [CAVRID] "C:\Program Files\Yahoo!\Antivirus\CAVRID.exe"
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe"
O4 - HKLM\..\Run: [MRT] "C:\WINDOWS\system32\MRT.exe" /R
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O12 - Plugin for .mid: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin2.dll
O12 - Plugin for .mov: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin.dll
O12 - Plugin for .mpeg: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin3.dll
O12 - Plugin for .tif: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin5.dll
O16 - DPF: JT's Blocks - http://download2.games.yahoo.com/games/clients/y/blt1_x.cab
O16 - DPF: Yahoo! Pool 2 - http://download2.games.yahoo.com/games/clients/y/poti_x.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {BCBC9371-595D-11D4-A96D-00105A1CEF6C} (View22RTE Class) - http://onlinedesigner.hgtv.com/images/app/view22rte.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{E88EC9D6-ED77-47B2-B15D-6A5AE5560038}: NameServer = 208.67.222.222 192.168.0.1
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O23 - Service: Ad-Aware 2007 Service (aawservice) - Lavasoft AB - C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
O23 - Service: Acronis Scheduler2 Service (AcrSch2Svc) - Acronis - C:\Program Files\Common Files\Maxtor\Schedule2\schedul2.exe
O23 - Service: AVG Anti-Spyware Guard - GRISOFT s.r.o. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: CAISafe - Computer Associates International, Inc. - C:\Program Files\Yahoo!\Antivirus\ISafe.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTsvcCDA.exe
O23 - Service: Crypkey License - Kenonic Controls Ltd. - C:\WINDOWS\SYSTEM32\crypserv.exe
O23 - Service: Dcfssvc - Eastman Kodak Company - C:\WINDOWS\system32\drivers\dcfssvc.exe
O23 - Service: dnWhoDisp - Rockwell Automation, Inc. - C:\Program Files\Rockwell Software\RSLINX\dnwhodisp.exe
O23 - Service: Fix - Unknown owner - C:\FIX32\fixsrv.exe
O23 - Service: Harmony - Rockwell Automation, Inc. - C:\Program Files\Rockwell Software\RSCommon\RSOBSERV.EXE
O23 - Service: InstallDriver Table Manager (IDriverT) - Unknown owner - C:\Program Files\Roxio\Roxio MyDVD DE\InstallShield\Driver\1050\Intel 32\IDriverT.exe (file missing)
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: stllssvr - Unknown owner - C:\Program Files\Common Files\SureThing Shared\stllssvr.exe (file missing)
O23 - Service: VET Message Service (VETMSGNT) - Computer Associates International, Inc. - C:\Program Files\Yahoo!\Antivirus\VetMsg.exe
O23 - Service: YPCService - Yahoo! Inc. - C:\WINDOWS\system32\YPCSER~1.EXE

 

Bump, not a serious problem as the serial port works fine. Just curious why advanced button
will not allow changes ( see first post)

 

I think it has to do with permissions for this registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\*PNP0501

Make sure "Full control" and "Read" are both checked and "Special Permissions" is not checked for user group "Everyone". And the same for "Administrators" (if there is an entry there).

Disclaimer: Editing the registry improperly can be hazardous to your computers health.

 

Thanks for the reply,
I don't see anything to change permissions under the registry you provided ( may I'm misssing something here)
Also I don't have a everyone group and don't see "Full Control", "read" or "Special Permissions" entries.

 

You need to highlight the registry key, right click it, and left click Permissions. Highlight "Everyone" then make sure "Full control" and "Read" are both checked and "Special Permissions" is not checked for user group "Everyone". Also, make sure no "Deny" boxes are checked. And the same for "Administrators" (if there is an entry there).


Disclaimer: Editing the registry improperly can be hazardous to your computers health.

 

Ok, found the setting and made changes as directed. The full control was not checked.
But it did not solve the original problem??

 

Do you have the recovery software for this Dell?

 

No I don't. As I said above the serial port works just fine. On another forum a guy
was having trouble with his com port and someone recommended he turn off the FIFO Buffer.
I got curious and tried to look at my computer to see how it was set. No go.
At this point I don't want to try to fix something thats not broke. Again just curious.

 

Good plan.