Csrss.exe Error On Startup!

Naughtyy

Honorable
Sep 23, 2013
2
0
10,510
Okay, so I have had this problem for nearly 2 months now and I have had no success with finding the fix.
I have a custom computer which I use for a lot of my gaming, it was very expensive and I have been updating it ever since 2010.
Just recently (1 months 3 weeks ago) I have encountered a problem with my pc starting up.
I downloaded this game called Slender. Don't ask why. Even I don't know why I did it.
I downloaded the game from a RAR file I had found. (Not from the original makers website which is what I should of done.)
After downloading and installing the game my pc had instantly started to go very slow, and I mean VERY SLOW. So I shut it down then restarted it.
On the restart I found that I had to do a System Repair (recommended) so I did it.
When my pc had finally reached the repair screen an error displayed in the centre reading:
"The file or directory D:\Windows\system32\csrss.exe is corrupted and unreadable. Please run the Chkdsk utility." And to be perfectly honest my face went blank. I literally had no idea what this meant. Yes I have a expensive gaming computer and been using pc for a long time now but I had no idea what either the csrss.exe or Chkdsk utility is. I then click the "Okay" button and my pc begins the repair process. This repair took me around 24 hours and in the end all I received was another big fat window reading the same error. I have done this repair several times with no success and I am wondering if anyone knows the problem and even the solution?
I am very limited to what I know about computers so please talk in a language I would understand.

Thank you,

Benjamin (Naughtyy)