Thanks for posting here.
From the description, I understand the issue is that you want to uninstall
the printer and install the vista drivers of epson R300. If I am off base,
please don't hesitate to let me know.
Let us refer to the following steps to troubleshoot the issue:
Please confirm if the use account belongs to the local administrator group.
Please try to stop/restart Print Spooler service and reboot the problematic
machine to test the issue again.
I would suggest we perform the following steps to manually delete the
a) Using Registry Editor incorrectly can cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee
that problems resulting from the incorrect use of Registry Editor can be
solved. Use Registry Editor at your own risk.
b) Using this method will remove all of the printer drivers installed on
the system. You need to reinstall the printer drive in order for the
printer to work.
1. Log into the system as an administrator, click Start >> Run, input
regedit and click OK to run regedit.exe.
2. Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l\Print, click
Registry->Export Registry File on the menu, and export the current key to a
REG file for backup. (Note: You may double click on the REG file in Windows
Explorer to restore the original settings)
3. Go to
s NT x86\Drivers, remove both the Version-2 and Version-3 keys.
4. Remove all sub keys under
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l\Print\Printers. (Do not
remove the Printers key.)
5. Go to
s NT x86\PrintProcessors, delete any processor that is not the following:
6. Go to
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l\Print\Providers, delete
any provider that is not one of the following:
Internet Print Provider
LanMan Print Services
7. Go to
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l\Print\Monitors, delete
any monitor that is not one of the following:
BJ Language Monitor
PJL Language Monitor
Standard TCP/IP Port
Windows NT Fax Monitor
AppleTalk Printing Devices
8. Exit the registry editor.
9. Remove all files from the following directories:
10. Reboot and install the printer drivers again.
Furthermore,Please go to epson official site to download the drivers
Note:This newsgroup is available for you to post issues and questions about
the use of the Vista Hardware Assessment Solution
your printer drivers is not related to the vista hardware assessment,this
is a reporting tool that will find computers on a network and determine if
they are ready to run the Windows Vista operating system.Please post your
issue in the appropriate newsgroup.
your understanding is greatly appreciated.
Have a nice day!
Jacky Luo (MSFT)
Microsoft CSS Online Newsgroup Support
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