Satellite A100 WIndows XP SP3 - Corrupted registry?

Toshiba Satellite A100 WIndows XP SP3.

A few days ago I noticed that windows update has stopped working and I had network problems. New research has shown that the BITS service did not start and other services such as DCOM did not begin. Fix - It of MS failed with the error code 7255. I tracked the issue to a possible Trojan horse as the registry keys had been renamed % fystemroot %. I've edited the keys to any %, according to online tips and delivered to market successfully. This has not fixed the BITS issue but more googling suggested that I needed a parameters key that included the Systemdll=%systemroot%\windows32\qmgr.dll value in the BIT key in HKLM system.

I added this, but now when machine re boots I get a partial screen, no task bar, I can perform certain tasks by CTRL-ALT-DEL and the functioning of the Task Manager. I tried to cancel the changes by running regedit, but it does not work. None of the user accounts, even in the CMD has access to most of the services or the directories.

I have the Toshiba repair disk but it seems to want to do a complete re-install XP, while I have backups, it would be my last option because I still have to lose data.

MS KB307545 says not to use on install OEM (I have a full version of XP SP2 I could boot from it) http://support.microsoft.com/kb/307545 but did not say what you need to do.

By pressing F8 during does not start safe mode and I can not find a mechanism beginning a system restore. I should have one from last Tuesday.

Anyone has any ideas.

Hello

See this Microsoft Knowledge base article:

+ How to start the System Restore tool by using the option of safe mode with the command prompt in Windows XP +.
http://support.Microsoft.com/kb/304449/

If you have an original Win XP disk then you could start using this disc. The installation of Win XP supports a repair option that start you press the R key (when windows asks to press R).

Otherwise I put t see any other option as to reinstall new OS

Tags: Toshiba

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