Hi, I have recently adquired a Dell laptop with Core 2 processor and Windows 7 Home Edition (64 bits) installed. Its seems to work pretty fine except for a little detail: sometimes Windows Explorer crashed a lot of times (it then restart and nothing else ugly happens but it is annoying) The main reason seems to be when I click the right mouse button (I use a Genius optical USB mousse instead of the touchpad), but sometimes when I use it nothing bad happens . I have installed Avast antivirus and I have scanned the computer finding no virus or malware in it. I do not if is a question of W7 or the W7 64 bit version or something else. I hope that someone can give me a hint of what is happenning.