Computer Freezes When Case Is touched

It was the lights for my case. I had 55v running through my case. I removed the light controler and now I have less then 1v. Still having the same issue. I took the MB out of the case and put it into another and it was fine. Put another MB in the 800d and when I toched it the computer froze. So I know it is not the MB. It seems there is an issue with the MB try not being grounded. If I have the extra ground cable touching another piece of metal in the case it is fine. I think I may call Corsair and have a talk with them.

Yes, you have the case hot. Either something is disconnected, painted/plated when it shouldn't be, or miswired (header connection?). A Guy

I am starting to think it is the PSU. If I take of either of the doors it still runs. However when I put the doors back on it freezes. My friend has the same model PSU so I will have to call him and borow it tomarrow.

I looked over the wires and it looked ok. The only lose wire is the fire wire front connector since this MB does not have firewire.

Interesting, if the PSU isn't isolated from the case, and has internal grounding issues... Sounds plausible. A Guy

The Corsair 800D has stands that are 1/4 inch tall and run as long as the 1200 watt corsair PSU is. I have some roofing rubber that I could rest it on to test.

Almost everything in this case is corsair so they should be helpful if I call them since they can't say that it not one of our products affecting it.

I know that the PSU is supposed to ground everything back to the ground on the outlet.

Do you have a simple test meter handy? For this, it doesn't matter whether it is analogue or digital (although a digital one, with continuity test facility, would be better). Set the meter to resistance mode (analogue) or continuity mode (digital).

Power off the computer and unplug the mains lead. Using the meter, touch one probe on the case and one on the case of the PSU. Is the resistance 0 ohms (if using digital, does the buzzer sound)? If the measurement is high or the buzzer doesn't sound, check the PSU mounting. You might need to scrape around where one of the mounting screws goes in order to get to clean metal (sometimes, there is a light lacquer coating and this can prevent a clean connection). You could also try inserting a shakeproof washer in order to force a good connection between PSU and case (this would go between the PSU and case, not simply under the crew head).

Test again. If this test now passes, move one of the probes so that it is now contacting the earthing pin of the mains electrical connector. If this test shows high resistance (or the buzzer doesn't sound), then there is potentially an internal fault with the PSU whereby the case is not connected to ground. This is potentially quite dangerous, because if a fault develops within the PSU, the case could become live at the full potential of the mains supply.

I am going to do all of the test that have be sugested and some of my own tomarrow. I will update all of the test results.

It is not the PSU. Used my friends same issue.

Tried everyones ideas and still same issue.

So I contacted Corsair and within 20min they got back to me with this:

The most common grounding issue source is the front I/O panel. Let's try to replace it:

In order to receive the replacement spare part, please follow these steps:

- Please visit this link: Corsair
- If you already have Corsair Web Store login ID and password, please login.
- If you don’t have Corsair Web Store login ID and password, please create one by following this URL: https://shop.corsair.com/customer/account/create/
- Add this item: Obsidian Series® 800D/700D Front Panel USB 3.0 Upgrade Kit - Case Parts - Parts
- Add the spare part(s) to your shopping cart
- Go to your shopping cart to review the parts
- Enter the coupon code: xxxxxxxxxxx (do not copy and paste, type this in manually)
- Checkout
- Complete your shipping information
- Choose the free ($0.00) shipping method
- Confirm your order

Please note that the part will be shipped out to you free of charge, you don’t need to enter your payment information for this order. The coupon code is only good for 7 days from the date issued. This coupon is only good for 1 use.

Once order confirmed, please allow 5-10 business days for delivery completion.
Please let us know if you have any question. Thank you.

Ahhh, that's what I meant by the header, the connections to the front panel. At least they are responsive and will help. Let us know how it goes. A Guy

Just got the replacement parts today and will install them tonight. I will post what happens.