Give the end user a loaner laptop or desktop. How are your profiles manage on AD on domain. Are profiles floating type where the user can walk-up to any PC on your domain an start accessing data from profile over server? If so then give the user a loaner setup his email an etc on that loaner. Take the system with the issue and the user going to take a few days.
Now if the user profile is on your server, then you can backup the user:
desktop icons
cookies
my documents including txt, office files, pdf, jpg etc
favorites
shared folders
shared folders, files, printer over the LAN
Printer you need a list of printers the end user uses
You can backup these files over the service but that might take time. Best to use a external USB2 HDD large enough for data backup processor or another system you use for such backup.
To fix the issue after the backup of user data, rebuild the system, with new image (also ghost it)
See techs need to speed up the recovery time for end users system.
1. Blow off the profile on the system and replace it with a new one.
2. Users should not be allowed to save important data files to the system HDD
3. All user data should be on the server in their profile on. Server space.
4. Exception to this would be laptops, but a replication process you be implemented for such equipment
I don't know how your infrastructure policy is setup at your company
When the end user reports a problem saying the computer is slow, that's a dead giveaway meaning:
A: HDD out of space
B: HDD is fragmented badly where the R/W are slower
C: HDD is full of junk temp files
D: Registry Errors
E: File Errors
F: Pest
On the HDD side I would have ran:
CHKDSK C: /F /R
Defrag C:
On the Windows side some run CCleaner or Advanced System Care Pro.
ASCP will scan for pest and remove them, but still need to run the AVS on the system.
From this point you will need to determined how the system is running after all of the above.
If the concussion is to re-image the system with a new image then make sure everything is backup.
If the concussion is to give the user the loaner laptop or replace the prior system with a new desktop or system on hand.
Backup user data
Image
Join the system to domain
Login in as the end user
Recover user data back to the new or old system
Setup Email
Test all user access to shares, shared printers and etc..
Login off as the user reboot the system
Login back as the user and test again everything
Call up the user and tell them the system is ready, when would be a good time to bring it back to them.
Setup it back let the end user check out the system while your still there.
Most test seem to leave too quickly after this process.