According to what I read:
This is the user-mode portion of the Win32 subsystem; Win32.sys is the kernel-mode portion. Csrss stands for Client/Server Run-Time
Subsystem, and is an essential subsystem that must be running at all times. Csrss is responsible for console windows, creating and/or
deleting threads, and implementing some portions of the 16-bit virtual MS-DOS environment.
The csrss.exe file is located in the folder C:\Windows\System32. In other cases, csrss.exe is a virus, spyware, trojan or worm! Virus with same name: Nimda.E
From the document you attached it was a temporary document file anyway so not sure why Windows is now stating it's missing something as temps are ditched eventually anyway - you would have had to remove the one situated in system32 for Windows to start posting a problem.
I don't know what system you have but you might try the following:
If XP: Go to Start/Run and type in sfc /scannow (with that space) click OK. (Must be done when signed in as an Administrator - level user).
If Vista/Windows 7 go to Start and type cmd in the Search box
In the menu above right-click CMD and select 'Run as Administrator'
Type in the Command Prompt window sfc /scannow and hit the Enter key. OK any prompts.
See if that can repair the system.
It may prompt you for the System CD/DVD, which may or may not work, depending on whether or not the CD/DVD is the same service pack level as the installed system.
If it doesn't then I suggest posting for help on a PC help forum. Tell me what you system is and I might be able to recommend one.
You also might want to do the following in order to get an independent opinion on what to do next...
Do not post Hijackthis logs here, we can't help with those!
Post the logs at one of these specialist Forums:
Be sure to read all the sticky announcements/instructions at the top of each malware forum!
The file in question has been removed...what you are left with is a registry value found in the HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run key.
You can remove this entry by clicking start>run>type msconfig> startup tab> remove csrss.exe found only in the location you have mentioned.
I wound up using CCleaner to delete the file from startup. Thank you for your assistance and quick responses! I will still be trying the HiJack This program to test for other errors. Again thanks!