Cant access my computer

[alanwest09872]

I have a very unusual problem. I cant access The my computer icon on my whs. Also If I go to my 2nd pc and click network it wont allow me to access that either. Sometimes It will most times it crashes. I have ran several antivirus programs and antispyware. Its very unusual. I wasnt having this problem a few days ago. I am wondering if its because of a new hardrive I added. Or could it be something else