A repair installation is a last resort attempt before a clean installation.
A repair/upgrade installation should preserve all the applications and data
on the computer however best practice is to always have backups of any
important data and configuration settings. For XP Pro if the user has any
files encrypted with EFS those files should be decrypted before doing a
clean install or the user will lose permanent access to those files unless
their is a backup of the EFS private key in a password protected .pfx file.
A repair/upgrade installation will often fix operating system related
problems but will not remove malware or spyware. It also would be worthwhile
to try using System File Checker as in sfc /scannow but be sure to have the
install disk handy. The links below explain more. --- Steve
http://www.microsoft.com/resources/d....mspx?mfr=true
--- SFC
http://support.microsoft.com/kb/306952/ --- see What an In-Place Upgrade
Changes and it also applies to XP.
What an In-Place Upgrade Changes
An in-place upgrade: . Rolls back any hotfixes, service packs, and Microsoft
Internet Explorer upgrades to their base versions.
. Refreshes the registry and restores default registry values.
. Reapplies default permissions.
. Reregisters Component Object Model (COM) components and Windows File
Protection (WFP) files.
. Reenumerates Plug and Play devices, including the hardware
abstraction layer (HAL).
. Reenumerates and changes drive letters, based on the current drives
and partitions that are seen during the in-place upgrade and on the rules
that are documented in the following article in the Microsoft Knowledge
Base:
"Andra" <andraatlatnetdotlv> wrote in message
news:(E-Mail Removed)...
> many thanks!
>
> yes, almost all of that tried except reinstallation or repair.
> It's all the same in Safe mode.
>
> Btw, what does repair do actually to the existing system? It's not my
> computer, I would like to make changes as little as possible.
>
>
> Steven L Umbach wrote
>> It could be malware or other problem such as software conflict. Check the
>> logs via Event Viewer to see if any error/warnings are shown that could
>> be
>> relevant. Try booting into Safe Mode to see if that makes any difference
>> then some startup program/process/service is causing the problem and if
> that
>> works msconfig can be used to troubleshoot via selective startup. Use
> Task
>> Manager and look at processes to see if any process [other than system
> idle
>> process] is using a large amount of the CPU when you experience the
> problem
>> which could help identify such. Make sure you scan for viruses in Safe
> Mode
>> also and that you scan for spyware also in Safe Mode being sure to use
>> the
>> latest definitions for any program you use to scan with. If you do not
> have
>> a spyware detection and removal program try the free for personal use
>> AdAware SE. If you don't make any progress you may want to consider doing
> an
>> upgrade/repair installation though you would need to first install your
>> service pack when done [if not included on the install disk] and then
>> all
>> critical security updates from Windows Updates. --- Steve
>>
>> http://www.lavasoft.de/software/adaware/ --- AdAware SE
>> http://www.microsoft.com/athome/secu...2/Default.mspx
>> --- Protect Your PC tips and links on how to deal with spyware and
> malware
>> http://www.michaelstevenstech.com/XPrepairinstall.htm --- XP repair
>> install info
>>
>>
>> "Andra" <andraatlatnetdotlv> wrote in message
>> news:e4jns8%(E-Mail Removed)...
>> > Win XP Prof. SP2
>> > Open Control Panel, double click Adm Tools, OK. Go back, double click
>> > either
>> > Adm Tools or Netw connections (or any that is shown under Control Panel
> in
>> > Windows Explorer - My Computer), nothing happens.
>> >
>> > it really seems it's some virus, but Norton AV does not detect any
> (though
>> > first run deleted some trojans).
>> >
>> > Any help?
>
>
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