Right i recently bought a Powercolor Radeon X1800XT 512mb PCI-E My system spec is in my sig, except of course its not a x800 i have any more. Now i installed this card and booted up my machine, and im getting some strange activity. The first one was that my screen keeps flickering while windows is booting, once its fully booted it seems ok. Although it tends to flicker when the screen rez changes (eg when im closeing a game. Normally goes a black screen then restores back to normal, but its jus flickering) although im not getting this in games so much luckly. But as for games they are performing poorly, not any better than my last card (sometimes a bit worse) when i know this card is MUCH better. Ive tried alot of drivers but no difference. I made BIOS tweaks before but ncase that was it i restored them back to normal. Now i get the logo as my PC is booting (its what it uses instead of showing a POST) and the picture is WREAKED. Looks all horrible and distoreted. Colors all messed (i know what it looked like before, the colors an that were fine). So i dont think it is a driver fault. Any ideas? My thoughts are: I am useing a converter, as this card only has 2 DVI ports i'm using a VGA-DVI converter, but i didnt think that would make any difference. This card has a passion apparently for being noisey. But for me, it is only noisey for 3 seconds after i turn on the pc. The fan starts spinning fast on the card, make a bit of a noise, then goes away and doesnt come back. This is linked to my next bit This is the first card ive had that needs power attached to it. I used the converter it gave me an there is power going into it. But i think mybye there isnt enough? Mibe it isnt getting enuf power, as my PSU is a 400w i think and i have 2 HDD's,1 CD-RW an 1 DVD-RW . And now that card. Could a lack of power be causeing this problem??