Ok here's what happened. Been on the computer a few minutes just browsing the net when I hear a series of rapid beeps, coming from my computer. Thinking somthing had gone tits up I quickly shut the computer down and restarted. On reboot I got the Windows check disk program appear and it said it was checking my drives for 'consistency'. As it was checking I noticed it picking up and fixing quite a lot of errors which got me worried. The it restarted and I was back in WIndows as normal, but all of a sudden for no reason the Keyboard switched off. I took out the keyboard connector gave it a blow and rewconnected it to the back of my PC. The keyboard came back to life but as that happened the mouse switched itself off. I took out the mouse and reconnected it to the mouse port but it was till dead, i then took off the adapter and plugged it into the USB port and it works. Now everything seems to be working apart from the Keyboard which jerks when holding the backpace and deleting large amounts of text, beforte it used to smoothly delete everything now it stops and starts after every space. My specs are: P4 2.4 ghz (HT Enabled) 512 DDR PC2700 GeForce4 Ti 4200 Seagate Barracuda 80gb SATA SB Live 5.1 Digital Abit A17 Mobo Windows XP pro Chieftec 360w PSU Can anyone tell me what happened to my PC? I built it myself so Im worried I screwed somthing up on it, its been working fine for 2 months though. Thanks for any replies.