Hi, I downloaded the last trial version of NOD32, and after installing it succesfully, I tried using the In-depth Scan but it crashed. NOD32 still runs and all, but the scan crashes before even giving me any kind of option. Running Nod32, normal scan, indepth scan. All kinds of scan just crash before even starting. As I read in other threads I tried using the right click option of the mouse, and scan single folders via explorer, but It crashes just like the other times. Someone told me Nod32 won't run if I have a virus already on my PC, but I did an online scan with Panda and I had 0 Viruses. I cleaned the pc out of spywares too with spybot. I need help with this because I have Nod32 running and all, but I can't know if I have a virus running in the shadows since I cant perform any kind of scans with it. By the way Im running Windows XP on a P4 2.8 Ghz 512Mb Ram 40+ Gbs of free Hd space, so Im guessing it's not system stats. Edit. I forgot to mention that I just assembled this pc about 3 weeks ago, Its the first Antivirus I tried and I haven't installed any other AVs. Oh, and the crash problem happened the first time I installed it.