Hi, I have a usb mouse and when I first begun to use it everything was fine. However, it came apart of time when I started to restart and then turn my computer on and it would come up with the nstorknl.exe is either corrupt or missing error. My initial thing was to unplug everything and see if it would start up. Long story short I narrowed it down to my mouse so when I turn my computer on I have to unplug my mouse until it comes up. I have changed mouses but that wasn't the problem. However, when I moved my computer didn't require me to unplug the mouse for maybe a month or so. Now, as of maybe couple weeks ago the problem is occuring. Also, Essexboy referred me to you guys for my C: drive keep coming up as dirty even after running chkdsk it will become back dirty. I run the fsutility and check it and it shows as C: is not dirty and when I restart again I check the fsutilty and such things essexboy told me to check and my drive is C: is dirty again. I am not sure what is the problem and I no longer have my 1 year warranty for this computer but it's not old at all (I have another computer maybe 3 years older than this computer that runs fine). I am looking to find out a solution to this problem. Thanks alot