The date 5.3.2010, I started my laptop (HP dv5T with vista x64 Windows – Home Premium). Before going to the welcome screen, a small dialog box appeared with the content below:
LogonUI.exe - Bad Image C:\Windows\System32\adsldpc.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original media or contact your system administrator or the software vendor for support.I must click 4-5 times for close it for getting the desktop.
And this dialog will be appear again after I turn off (shutdown) the laptop, as similarly as starting the computer.
In the progress I use computer, I still see another dialog box with the content below:
Virtual Disk Service stopped working and was closed A problem caused the application to stop working correctly. Windows will notify you if a solution is availablePlease help me fix these errors. thank you very much.
And
To do this, I click Start, click All Programs , click Accessories , right-click Command Prompt , and then click Run as administrator . If you are prompted for an administrator password or for a confirmation, type the password, or click Allow. Type the following command, and then press ENTER: sfc /scannow The sfc /scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions. Post back the result.
I Follow the way you instruct me but everything I got, is the picture like this link:

I dont understand the above information image.
and then I type the following command, and then press ENTER: sfc/scanboot

Edited by sad afternoon, 13 March 2010 - 12:34 AM.