PC issue, not sure what's causing it or why.

Zewp

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Just posted this on MyGaming, but I thought I'd post here too to see if someone doesn't know anything about this issue that's been plaguing me the last few years.

Okay, seeing as Skyrim is going to require me to plug my graphics card out to be able to plug my DVD Rom in, I might as well see if I can't resolve the issue before then.

Something in my PC is causing issues, and I have no idea what. It's been doing it for years, all the way through upgrades and overhauls, and it's got me stumped.

Often after my PC has been in transit, or when I install a new graphics card, I have issues getting the PC to work. I'm not sure if it's my PSU, motherboard, or what, as it's been doing this since 2009. Since then, I've had two new graphics cards, a new motherboard, new CPU and a new PSU, and the problem still persists.

What happens is that I'll install the GPU (or try to switch the PC on after bringing it home), and then the PC receives power, but doesn't do anything. It powers up, the fans start spinning, but the hard drives don't initialize and it doesn't seem to POST. The screen goes into Standby mode.

When I remove the GPU and use the on-board GPU, there's about a 90% chance it doesn't happen, and when I replace the GPU, it more often than not happens again. Now I know this sounds like it's an issue with the GPU or PCI-E slot, but I'm not quite sure, seeing as the exact same thing happened with two different GPUs and another motherboard.

I'm not sure I can blame the PSU, because it's a 550watt PSU, and my HD6870 requires only 450, so there's enough output for the system. I'm very hesitant to blame the PCI slot, because once you get the card working, it stays operational until you move the PC again or remove the card.

The only solution I've found so far is to unplug absolutely everything in the PC, and plug it back in, then try again until eventually the PC starts up. As you can imagine, this is highly frustrating due to the fact that it's not a set solution and when I had to install my GTS250 in December it took me about three hours to get it working.

Skyrim is coming on Friday, and my HD6870 is such a large card that it obscures all my SATA ports, leaving me without a DVD Rom unless I remove the card. Unless my flatmate is there to make an image of the disk for me on his PC, I'm going to have to unplug my card to get it installed, and I'm probably going to spend the next three hours after that trying to get the PC to work, which will kill me.

Anybody have any idea at all what might be causing this?

Edit:

Just put in an order for one of these;

http://www.takealot.com/electronics/vizo-sa-60-60cm-24-inch-sata-cable-uv-blue,3695358

But it's still going to require me to remove the card to install it first, and it might still protrude too much.
 
Take the motherboard out and check the position of the standoffs. One may be in the wrong position and shorting the board.

This has happened to me once.
 
Yeah what bio said. If you want to make extra sure its not a shorting issue you can remove it completely from the case & rebuild it outside the case on a wooden table.

Also check the earthing on the power cable & wallsocket (carefully).
 
Yep shorts are an ass to trace,and usually give the same symptoms. Do what havoc said ^
 
I used to have issues booting my PC after I've moved it. It turned out the DIMMS were not completely locked into position, even though it looked like they were. Are you sure it's not the RAM?
 
How old is your PSU?

Some use cheap capacitors that degrade after a year or 3 of use. Symptoms can be anything from what you describe to random bsods and other weird problems that you'd never dream of tracing back to your PSU.

If there aren't any obvious shorts, try borrowing another PSU and see if the problem goes away...
 
Rip the DVD to an ISO file or copy it to USB on another PC so you don't need to go through this crap.
 
Hmm, I think I should take Havoc and Bio's advice and disassemble the whole thing to look for a short, even though it's going to be a real bitch to find. Might as well do that and clean out the entire case properly for once. I just hope I can find the damn issue once and for all, seeing as it's done this through upgrades and component replacements for a few years now.

Is it perhaps possible that either the case itself or the HDDs might be causing it, seeing as that's the only parts that haven't been changed since 2009?

How old is your PSU?

Some use cheap capacitors that degrade after a year or 3 of use. Symptoms can be anything from what you describe to random bsods and other weird problems that you'd never dream of tracing back to your PSU.

If there aren't any obvious shorts, try borrowing another PSU and see if the problem goes away...

Hmm, I'm not sure. I got the PSU in December, and had issues on the first day of installing it, but I didn't think anything of it being the PSU, due to the fact that I've had similar issues before installing the new one. I bought the PSU the same day I upgraded my GPU to a GTS 250.
 
question:

how do you place the PC in the car?
1. Upright
2. On its side with MB on the side that's facing up
3. MB on the side facing down
 
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