Before I go into the problem, this is what heppened immediately before it. - Installed latest ATI Drivers>Catalyst e.t.c (for my AGP 8x Radeon X800XT) - Set Primary boot device in Bios to HDD-1 - Set Dram frequency in Bios to 200mhz (It was by SPD before) My RAM is PC2100, and i have 2 512MB sticks of it. - Set AGP Aparture size to 128MB (from 256MB) Don't ask me why i did this, i dont know Basically it was MOH:Spearhead suddenly decided not to work and i thought the vid card settings/ram needed changing...... anyyway. What happened next has baffled/screwed me. My monitor said it couldn't find a signal, even though the PC looks as if it is on and running properly. I checked the connection, its fine. So then ithought - maybe i broke the GFX card. I took it out and put my old Geforce FX500 in - no change. I also replaced the RAM with 2x 256MB (old) and still, nothing. I then took the monitor to an older PC and plugged it in, where it worked. Now i am really stuck - I cant see the screen to see whyether its on or not - all the fans e.t.c look to be working, lights and everything.... the ONLY thing i could think of is that changing the DRAM frequency it was overheating it - but i cant see the BIOS to change anything. what should i do?