looks like OP has another monitor that shows no signal next to the hp monitor that is showing a splendid jumbled video screen.  That is at least better than a blank screen which is often a sign of no POST (sometimes called no boot).  If the other monitor is also currently connected to R4, then the easiest test is to first unplug the hp monitor, thus forcing the 2nd monitor to show its face.  If I had to guess, given 50/50 chance I could be wrong, it is the hp monitor that has messed up than the R4 video card.  Have seen a few monitors go bad with flashy screen but not a bad video card that dies in high fashion.  
[IMAGE]  Hello all, when I tried to boot my system this morning it did this. In all my years of working on technology, I've never seen this. Any help would be extremely helpful. Thank you. 
Aurora R4, no boot