csrss.exe disk usage

Question

I am using Windows 8.1 and have encountered a problem where my disk usage is is usually always at 100%, i got to what i believe the root of the problem is and i found that csrss.exe is the top of the list, i went to task manager, details, and changed the columns so i could see the I/O read and write.  It shows csrss.exe I/O reads at  2,712,730 and I/O read bytes at 66,813,450.  I am suspecting these are very very high numbers and need to be brought down.  I did a little research and found out that the csrss.exe can actually be a virus in some instances and I cant figure out how to check if mine is a virus. 

Any help would be great, thanks.

Answer 1

Running the free edition of Malwarebytes would probably be a good start. 

http://www.malwarebytes.org/mwb-download/var8/

Mark Russinovich's TechEd sessions on hunting down malware may be of some interest, but that depends on your personal skill level. 

http://channel9.msdn.com/events/TechEd/Europe/2014/CDP-B373

Also, there are several helpful suggestions in this thread in the Viruses and Malware forum:

http://answers.microsoft.com/en-us/protect/forum/mse-protect_scanning/a-message-came-up-and-said-my-computer-is-infected/6d82ca36-88ab-487a-82b7-11f939889026