How to delete hidden files in windows 7?

When I enable the "show hidden files and folders" in folder option, it gets reset again. What's the problem??

• The operating system is "Windows XP SP2". Recently it was attacked by some virus. I dont know whether it has been removed or not but I was able to delete some of the associated files. I now dont see the symptoms of attack but I could not enable the "show hidden files and folders" in folder option.

• Answer:

  If you're not sure if you removed the virus(es) completely, that could be the problem. There are a number of registry settings which control the "show hidden files..." property and they may not all be set back either. In any event, your first priority should be to ensure that your system is clean. There are several things you need to do: 1) turn off System Restore. You do this by going to Accessories..System Tools..System Restore. Turn this off--it's most often not needed and is a place where viruses hide. 2) go to www.grisoft.com and download their AVG anti-virus package. After installation, make sure you have it updated with the most current definitions. 3) I assume you're running Windows XP. Turn off your computer and re-start it in safe mode (which you do by repeatedly pressing either F5 or F8 just after you turn the power back on--you'll get a menu asking you how you want to start up). Once you've booted into safe mode, run the AVG software. This is a *very* aggressive software package and can remove just about anything. 4) Reboot your computer normally. If you're still having problems, continue with the following: 5) Go to http://www.spywareinfo.com/~merijn/progr... and download HiJackThis. Run the program, which will create a log file. Go to http://forums.spywareinfo.com/ and post your HiJackThis log. You will get an extremely rapid, very precise answer as to whether or not you still have any infections and, if so, exactly what to do. 6) After everything is all cleaned up I recommend installing SpyBot (it's free; just make sure to keep it updated): http://www.safer-networking.org/ and SpywareTerminator (also free): http://www.spywareterminator.com/ Good luck!