There is also a red brown cap with a Y vent near the dimm slots. the power supply could be bad and/or developed bad caps causing issues on the board. Is there someone who happens to own one of these Precisions and had this same exact problem? Do you think it is related to the caps? Should I try replacing them again?Ĭheck the power supply. The circled capacitors are those which have been replaced. I've snapped a few pictures of the motherboard. I am also suspecting the ones we bought to replace the old ones with are of bad quality. I once had a motherboard with capacitors that were barely buldging (they weren't even leaking) but still caused problems. All of the caps *seem* to be fine, but I've noticed that in these motherboards, the crappy capacitors tend to dry up after a while, ultimately causing issues, even if they're not buldging. I am unsure whether these errors are related to the capacitors. Message 2: Alert! Error initializing PCI Express slot 2 (this explains why I wasn't getting video with the PCIe video cards). Message 1: Alert! Error initializing PCI Express NIC bridge. I got an old PCI graphics card and actually got video signal but was greeted with two wonderful messages. So I figured if the computer is beeping, it's at least POSTing. I've tried multiple PCIe graphics cards and none worked. I decided to turn the computer on again and guess what, it beeps twice but there's no video. After a week or so, I turned it off and put it in storage. I even remember playing some old games on it without any problems. As soon as I got it, we replaced its capacitors and I remember installing Windows XP and running Dell diagnostics. The problem was, like with most old Dells, the motherboard capacitors. Around two years ago, I was given a Dell Precision 490 that wouldn't turn on.

Dell precision 490 desktop user manual