Can you :
a) Get Windows to start in "Safe Mode" by pressing F8 during the start up sequence ?
b) Access DOS - maybe using a Windows Start Up Disc ( and if you don't have one get a friend with the same Windows version to make you one )
Either way if you need to try disabling the above command which will be in your autoexec.bat file.
If you can get Windows Safe Mode to start just click "Run" then type "msconfig" and press enter - click on the Autoexec.bat tab and clear the tick from alongside this command, then click Apply and restart the computer.
If you can't get into Windows at all, but can access DOS, then from within DOS type :
This will open up a DOS window displaying the contents of your autoexec.bat file. At the start of the "c:\smartdrv.exe.x" line type "REM" and a space ( without the quotes ).
The "REM" command tells the computer to ignore that line.
Click File, then Save, and File then Exit
Close everything down and reboot the PC - not forgetting the obligatory fingers crossed routine !
Although this may be a start to getting you back up and running, if it was me, even though I've moved address, I'd be trying to sort it out with the company that did the repair - give them a phone call - it's their responsibility to sort it out if they've messed it up !
Good luck !
"Boot-It-Out" click here