It all started about an hour ago, I've opened up my case in order to take out my network card (The computer didn't really identify it and I thought that taking it out / in might help). So i did it, put it all back together, turned the computer on and got this nice and cheerful message - BOOT DISK FAILURE - INSERT SYSTEM DISK AND PRESS ENTER. I figured that i might've touched my Harddisks cables, so I've reconneced them, didn't help. nor did clearing the bios or putting the NIC back in (that's all I could think of) - any other ideas ?