Gigabyte mobo ?
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From: philo on 5 Nov 2009 06:51 I've got a GA-K8N Pro-sli on the workbench It typically takes 8 - 12 tries to get it to boot up.. but once booted the machine runs fine. I've tried everything I can think up... reflashed the bios with a newer one. Tried a different power supply / ram / video card etc even changed the cmos battery Since the machine starts too unreliably I'm going to pitch the mobo into the recycle bin... unless someone here has an idea I've missed
From: JD on 5 Nov 2009 12:24 philo wrote: > I've got a GA-K8N Pro-sli on the workbench > > It typically takes 8 - 12 tries to get it to boot up.. > but once booted the machine runs fine. > > I've tried everything I can think up... > reflashed the bios with a newer one. > > Tried a different power supply / ram / video card etc > > even changed the cmos battery > > > Since the machine starts too unreliably I'm going to pitch the mobo into > the recycle bin... > > > unless someone here has an idea I've missed It could be in the motherboard or in the connections or it could be that you have a faulty power supply. Make sure all the connections - right up to the wall power socket - are very firmly in place. First shut down the box and then pull each connector out and push it back firmly into place. Restart. Good luck!
From: John McGaw on 5 Nov 2009 13:15 philo wrote: > I've got a GA-K8N Pro-sli on the workbench > > It typically takes 8 - 12 tries to get it to boot up.. > but once booted the machine runs fine. > > I've tried everything I can think up... > reflashed the bios with a newer one. > > Tried a different power supply / ram / video card etc > > even changed the cmos battery > > > Since the machine starts too unreliably I'm going to pitch the mobo into > the recycle bin... > > > unless someone here has an idea I've missed Exactly what happens when it _doesn't_ boot? Fans, lights, BIOS display, tries to load OS, etc? I've got a machine in the basement which doesn't boot every time but I know for a fact that it is simply a bad power switch in the case and it doesn't make contact every time I press it. I've been too lazy to see about replacing the switch for two years now and have gotten quite used to it. -- John McGaw [Knoxville, TN, USA] http://johnmcgaw.com
From: Paul on 5 Nov 2009 13:19 philo wrote: > I've got a GA-K8N Pro-sli on the workbench > > It typically takes 8 - 12 tries to get it to boot up.. > but once booted the machine runs fine. > > I've tried everything I can think up... > reflashed the bios with a newer one. > > Tried a different power supply / ram / video card etc > > even changed the cmos battery > > > Since the machine starts too unreliably I'm going to pitch the mobo into > the recycle bin... > > > unless someone here has an idea I've missed It has Dual BIOS, so you'd probably have to reflash it twice, if you wanted to be absolutely certain both BIOS choices were running the same version. As far as I know, the Gigabyte scheme uses one boot block and two main BIOS code blocks, so there is only one boot block to run the whole thing. Meaning, if the boot block is damaged, then the dual BIOS won't work. Check that the settings have returned to defaults. Load setup defaults or whatever. Make sure the processor used, is listed in the support chart. http://www.gigabyte.com.tw/Support/Motherboard/CPUSupport_Model.aspx?ProductID=1883#anchor_os There were a few AMD processors, that suffered from electromigration due to overclocking. If you suspect that is the case (user abuse), you can try running the processor below stock speed, and see if that helps. You can check the reviews on Newegg, and see if there is a common theme. http://www.newegg.com/Product/ProductReview.aspx?Item=13-128-301&SortField=0&SummaryType=0&Pagesize=100&SelectedRating=-1&Page=1 It is possible the PCI Express slots are sensitive to static. Carefully set the paddle card, to x8/x8 mode, on the off chance that the video will work better if only half the bus is being used. Use antistatic precautions, like a wrist strap, while changing the paddlecard, just in case. It is kinda amazing, that a single chip Nvidia chipset solution, can run without a cooling fan. Your problem could be occurring while the boot block is doing its thing, so in fact the problem could be entirely at stock speeds. I don't know whether a board like that, does a double restart to apply user settings or not. If it does do something like that, there might not be much in fact that you can do with the BIOS, to influence the problem. Drop to one stick of RAM and see if that helps. Paul
From: philo on 5 Nov 2009 13:35 John McGaw wrote: > philo wrote: >> I've got a GA-K8N Pro-sli on the workbench >> >> It typically takes 8 - 12 tries to get it to boot up.. >> but once booted the machine runs fine. >> >> I've tried everything I can think up... >> reflashed the bios with a newer one. >> >> Tried a different power supply / ram / video card etc >> >> even changed the cmos battery >> >> >> Since the machine starts too unreliably I'm going to pitch the mobo >> into the recycle bin... >> >> >> unless someone here has an idea I've missed > > Exactly what happens when it _doesn't_ boot? Fans, lights, BIOS display, > tries to load OS, etc? I've got a machine in the basement which doesn't > boot every time but I know for a fact that it is simply a bad power > switch in the case and it doesn't make contact every time I press it. > I've been too lazy to see about replacing the switch for two years now > and have gotten quite used to it. > All the fans spin up... but the machine never posts
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