I bought 3 19" Dell LCD's and untill I recently purchased a Matrox GS200 Quad card, the one LCD I had connected direct to the SGVA of my motherboard worked perfect. (Intel D865GBF Motherboard with 478socket 3.0 P4). After seating the Matrox Card and connecting the DVI SGVA converter cable to the SGVA socket on my LCD, I lost all display. No beeps nothing. I remove the matrox card and connect the old way (LCD/SGVA to SGVA on MObo) and now this doesnt work either

Heres the thing, I have 3 exact same motherboard also (that work). I switch out the motherboards and seat the RAM, CPU, connect the power supply...no display or beep. I switced out the video card with a spare ATI Radeon 9800Pro ...still no display or beep.

Any suggestions. I cant get to the BIOS cos I cannot see anything. However, I downloaded a new BIOS from Intel to floppy, removed the jumper, input the floppy & reboot, still nothing. Power supply works as I have 6 fans connected, and they all power up incl the DVD and green LED on Mobo. I removed the battery for 10 Mins, that didnt work either. Im powering the PC with the power switch so that isnt the issue either.

So the question is the DVI caused something weird that has killed my display. Has anyone had this issue? Frustrated !!!

well... all i can say then... is if you want to get a post, to remove ALL non essential hardware from the motherboard, that it wouldnt be required to boot up with... leaving only the gpu, cpu, and memory installed... power the system on, removing the remaining components one at a time till you get a post beep, if you STILL have no post beep after removing/disconnecting all of the non essential hardware, it means none of the hardware you removed was causing a problem... next step is to remove the gpu and hope it beeps, meaning the gpu was bad then, but if still no beep? next remove the cpu to attempt to get a post beep, still no beep? remove the memory to hope for the same thing, still no beep?... well, all thats left is the motherboard, which means its more than likely dead... but you keep removing necessary components till it beeps... in that order; gpu, cpu, then memory.

hope this gets you to the source of the problem