Hi,
Thank you for posting in Microsoft Community Forums.
As per the description, you are unable to install a screensaver in Windows 7. I'll surely help you if you could let us know the following details:
- Do you get any error message/code?
- How are you trying to install the screensaver?
- How was the screen saver prepared? Are you downloading it online?
A missing or corrupt .dll file can be caused by any of the below possibilities.
- Another program was uninstalled that removed a .dll file that was required by another program or the operating system.
- A program was installed that overwrote the .dll file with either an older version or a version that is incompatible with other programs causing .dll errors.
- A bad installation of a program corrupted one or more files causing the .dll errors.
- Another user or program maliciously or mistakenly deleted the .dll file or an associated file.
- A hardware issue exists with the computer, such as a bad hard drive, causing the data on the drive to become corrupt, casing the .dll errors.
Please follow the methods to fix the issue:
Method 1: I would suggest to re-register the .dll:
- Click on Start, then Run.
- Now all you have to do to register a DLL file is to type in the regsvr32 command, followed by the path of the DLL file. : regsvr32 C:\Windows\System32\ltkrn10n.dill
- Hit OK.
Method 2: Run SFC scan in the computer
Use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows
http://support.microsoft.com/kb/929833
Method 3: Let’s run a virus scan:
Microsoft Safety Scanner
http://www.microsoft.com/security/scanner/en-us/default.aspx
Note: Any data files that are infected may only be cleaned by deleting the file entirely, which means there is a potential for data loss.
Do let us know if you have any other queries pertaining to Windows in the future. We will be happy to help. We, at Microsoft strive towards excellence and provide our customers with the best support.