dunno what I did, but it's now fine. Hi guys, I've somehow killed my (other) computer. I was just tidying up the cables inside, and added a fan. After doing so I turned it back on and the siren went off, but it stayed powered up. I resat the heat-sink on the CPU and it seemed to fix everything, but alas, it's still not right. It will now post fine, but then there's nothing on screen, though the monitor won't timeout and go to standby. The diag LEDs are all green, no warning beeps. What have I done!? Any ideas, please MSN me (or post here). TIA, j