I installed a Radeon 9700 yesterday in a machine built on a Tyan Trinity 400 motherboard (using VIA Apollo Pro 133a chip set). It booted and ran fine yesterday. I cold booted once (when the card was newly inserted) and warm rebooted several times.
Today, it won’t even POST. It just spins up the drives and hangs, no video out, no beep, no nothing. Putting in another card makes it happy again.
Yes, I plugged in the extra Radeon power.
Tyan’s latest BIOS update is from year 2000, althout BIOS-es for newer motherboards make a lot of mentions of work-arounds for Radeon 8500 cards (no mention of the 9700 yet).
ATI support search doesn’t show much relevant, except for some mention that 8500s may have compatibility problems and a BIOS update is recommended.
I would almost think that there’s some bug making it not work, and that I’m toast for plugging in a new card in an older machine – except it worked yesterday!
Wonderful. I tried it on an FIC AD11 with the same results.
Checking the BIOS for the Trinity 400, it is set at 4X AGP, and AGP drive control (the only AGP-voltage-like setting there is) is set on Auto. If the mobo is this much out of spec, I sure won’t be recommending Tyan to anyone anymore…
Tyan Trinity 400 (S1854) with BIOS 1.06 seems to come with the AGP drive strength set to Auto, which as far as I can tell may cause it to be out of spec. This Drive Strength option is not described in the manual that comes with the motherboard. There is no mention of this problem, or the problems it can cause, on the Tyan web site, nor on their graphics card compatibility list. A search on keywords on their site finds nothing. However, if you download a PDF with an updated version of the manual, it documents this option saying “we recommend changing this value to CC” with no further explanation.
Check your power supply for 5v +/- and 12v +/-. Power supplies can increase or decrease voltage with age. Just something else to check if your system is older. I know your other components run but newer hardware is less forgiving than the older ones. Also the voltage regulator on the motherboard may be out of specs.
Reading between the lines on the Tyan web site for the Trinity 400, and comparing the updated instructions on that site to the instructions in the manual that came with my motherboard, tells me that the problem is most likely with their flawed design.
Their support has not yet replied to my e-mail asking if this is a known issue.