Hi everyone Starting from last nite, my laptop all of the suddent could not open ANY folers, included my computer, control panel, my document, ANY folders. So I tried to look for solution on the website but no luck at all. The error message I got as the following Explorer.EXE - Application Error The instruction at "0x0250c9ed" referenced memory at "0x00000000". The memory could not be "written". Click on OK to terminate the program Click on CANCEL to debug the program OK Cancel When I clicked OK, it will just refresh the desktop, and won't close my applications (for example, word), and the "0x0250c9ed" changed everytime, however, always started with 0x02 and ends with c9ed. I also tried to open IE, and the mouse icon becomes busy as usual, but then it stops and nothing happen. All other program runs fine, I uninstalled spysweep, I don't know what else I can do. BTW, I'm using XP SP2 home, it came with the laptop and I've been updated with windows update all the time. Specs are the following: Celeron M 1.5ghz 512mb DDR 60g HD 128mb shared video If anyone can provide me some advice, I will really really appreciate that!!! Thanks a bunch for reading this!!!