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I recently bought a new ASUS EAH5850 graphics board. I installed it a custom PC which had an ASUS p5n-e SLI mobo along with a 500w Thermaltake W0093RU power supply.
Sometimes when doing a cold boot the 5850's fan will run at full speed and the PC will not boot. Powering off by holding down the power button and powering back on sometimes remedies the situation and everything boots normally. Warm reboots also never seem to have problems. For some reason though cold boots almost always do. Another issue I notice is that when the PC does boot normally it takes longer (+30 secs) to POST than with my last video card. I flashed the mobo with the latest available BIOS but it had no effect.
Is my problem a power issue or incompatible motherboard or something else I'm missing?
This cold boot problem seems to happen with a lot of 5800 series cards, and some manufacturers have even released updated video card BIOSes to remedy the problem. – Andrew Mao – 2014-12-30T21:12:00.937
I recently built a new PC and used this card in it and it is working fine. The new PC was built with a 750W PSU and I never had any video card issues so I'm pretty confident my original problem was power related. – Kris – 2010-05-14T17:25:12.310
So I'm assuming from your comments, it will boot fine without the card installed? If so, obviously the card is at fault, it is strange though that you are reporting different results with different boots. Checked BIOS settings for video configurations? Perhaps, disabling quick boot see if it changes anything on a cold boot? – AdminAlive – 2009-10-23T16:35:36.483
I was thinking of power issues because the card requires 2 12v power PCI power connectors on it. My power supply had 1 already and the card came with an adapter that goes from 2 molex to 1 PCI for the other. BIOS settings look OK and I don't think I have quick boot enabled but it's possible...I'll have to check. – Kris – 2009-10-23T18:58:32.513