Issue with 5850.

[hominid]

I bought a Powercolour 5850 and it's been working fine since I purchased it. For the last two mornings it's not the machine has not wanted to boot. The graphics card fan speed speeds up to 100% with no output to the monitor. Only a power down and restart gets it going again.

Specs are:

Asus p5q motheboard (with E8500)
Powerclolour 5850 G/card
Be quiet Darkpower 850W Power supply

I've never had any problems with the machine before this, and once it has booted the first time it's fine for the rest of the day with no instability.

I've checked for bios updates but Asus asn't released any for a few months.

I also, before going to bed last night checked the PCI frequency and I had set it to 101 previously, so I changed it to 100 but it made no difference this morning as I still have the cold boot issue.

Any suggestions as to what I could do to fix it?

Many thanks.

 

[hominid]

Hi hominid,

I too have the same issue, but I have to power cycle about 8 or 9 times before it works, but once it works it's perfectly fine until I power off again, it even survives reboots, the problem only occurs when I power off completely.

I suspect it's an Asus mobo issue, as I have a P5N-E SLI, and looking on the intraweb many Asus users are experiencing the same issue.

On a good note, just had mine overclocked to 850mhz core on default vcore, and it ran furmark quite happily for some time. Temp were 86c-88c with auto fan, which maxed out at 44%.

All in all I'm quite happy to live with the boot issue as I'm gonna be upgrading to an i5/7 soon anyway (E6420 @ 3.2ghz currently).

Regards

Spec

Thanks for the reply

It's odd that it was ok for the first week or so and has only just started to do it, so not 100% sure what's going on. It's got a 1 year warrentee so I can live with it for a bit to see if things develope further.

I did a test overclock and mine goes to at least 925MHz on stock volts, but get a bit warm for my taste with furmark - I chickened out at that point, so it's a good clocker.

The only other thing I can check is to see if my CPU overclock somehow is causing it so I'm going reset the mobo to defaults tonight in order to see how it goes in the morning. I might even flash the bios to something newer although it doesn't even look like anything relevant has been added for ages. Those are the only things I can think of.

 

[hominid]

Update on my machine.

I reset it to factory defaults in the bios and switched it off, this morning I turn it on and it boots first time. So the inference to be made is that something in my overclock was screwing with the 5850. It also could be a fluke so I'll reset it again tonight and see how it is again tomorrow.

I've had a 4850 in the machine for nearly a year before with no issue with the settings I used, and also the 5850 was ok for a week or more before. I still don't get how it can go from being fine to having issues with out me changing a thing.

Anyway it looks like I can fix the issues with some motherboard tweaking so I'm not worried atm - time will tell.