explorer.exe error ( c:\windows\system32\PROPSYS.dll ) on startup

[wazdown]

Hello, I recently started having trouble with windows 7. I tried to install new ram cards but they did not work so i put the old ones back in and once i turned the computer in the error c:\windows\system32\PROPSYS.dll appeared. I have tried to tun it in safe mode and nothing worked, i tried disabling the start ups services and still nothing. It lets me log into my user account bu the screen is completely black. Someone please help

 

[Hanna 1]

Did you try tha SFC /SCANNOW:

http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html?ltr=S
Or a STARTUP REPAIR:

http://www.sevenforums.com/tutorials/105541-startup-repair-run-3-separate-times.html?ltr=S
Or even a SYSTEM RESTORE:

http://www.sevenforums.com/tutorials/700-system-restore.html?ltr=S

 

[Sir George]

Hello, I recently started having trouble with windows 7. I tried to install new ram cards but they did not work so i put the old ones back in and once i turned the computer in the error c:\windows\system32\PROPSYS.dll appeared. I have tried to tun it in safe mode and nothing worked, i tried disabling the start ups services and still nothing. It lets me log into my user account bu the screen is completely black. Someone please help

Why were you replacing the ram? Were you having some problems with the system or was it an attempt to upgrade ram capacity? Was the system stable prior to attempting the ram replacement?

 

[Yengus]

I was having the Black Screen of Death with mouser pointer and realised through Event Viwer (eventvwr.msc) that the explorer.exe crash was associated to the propsys.dll located in windows\system32 folder.

So, I managed to emulate a mini WinXP via Hiren's Boot, loaded a "health" propsys.dll from my other Windows 7 system and overwrote the corrupted one. Problem solved to me!