asus a7n8x random reboots: could it be the power supply?
Hmmm. Connie’s machine is now in a strange state. Seems to randomly reboot and now it hangs on IDE detection. I’ve turned off all the overclocking, but basically, it gets blown back to the power up. As if the reset button were pushed. I noticed that if I have the reset jumper in, the machine now won’t start, so I disabled that. And now it boots, but will hang all the time. Why? Well, here’s a good guess…
“Whimpy Power Supply”:http://www.nforcershq.com/forum/viewtopic.php?p=266234. Hmm a big source of problems, I have a 350 watt one, but is it enough, check out “JS Calculator”:http://www.jscustompcs.com/power_supply/ to see. My math shows I need 448 watts and I have a 350 watt supply. Found it! Main reason is that I’ve got 4 disks spinning which each require an additional 50 watts plus a brand new video card, so no wonder I have problems. Plus a Promise controller card. And, you have to have a supply with 17% more or so I need a 520 watt supply so I’m off to shop at “Tom’s Hardware”:http://www6.tomshardware.com/howto/20030609/ and also get rid of some hard drives ASAP. I can get rid of the 60GB system drive soon enough and one of the 120GB hard drives, this mean no Promise controller (net savings, 75watts!).
“nForcesHQ.com”:http://www.nforcershq.com/forum/viewforum.php?f=13. apparently, this is the main site for all the nForce based cards. This is the site for the ASUS. ‘They have an amazing list of open “issues”:http://www.nforcershq.com/forum/viewtopic.php?t=11763 with:
* “Standby”:http://www.nforcershq.com/forum/viewtopic.php?t=14905&highlight=standby issues
* “More than 4 seconds”:http://www.nforcershq.com/forum/viewtopic.php?t=11763&start=30 will reset you to 100MHz so you can restart if you are overclocking
* “AGP drive low”:http://www.nforcershq.com/forum/viewtopic.php?t=11763&postdays=0&postorder=desc&start=45 resulting in random reboots because the video card draws too much
* RAID controller has lots of bugs with XP. The S-ATA is working though, but with much pain.
* “Uber BIOS”:http://homepage.ntlworld.com/michael.mcclay/. Michacel McClay has taken each ASUS BIOS and tweaked it for better stability and bug fixes. So these are the ones to download. Will try and see if this helps. BTW, he uses the RAR archive format. “ALZIP”:http://www.alzip.com/ has a freeware version for home users to decompress that format.
* “Ben Pope FAQ”:http://www.ben.pope.name/a7n8x_faq.html. Ben’s FAQ.
Hmmm. Makes me wonder if I bought the right board ;-( It got great reviews. Lesson here is look at the reviews *and* then go to the support forums.
Also did random google trolling to find many users who don’t know what is going on:
I’m trolling the web and amazingly, someone at “hardware analysis”:http://www.hardwareanalysis.com/content/topic/17590/ is having the exact same problem. No answers though. Seems like a very low level problem somewhere.
“OCworkbench”:http://www.ocworkbench.com/ocwb/ultimatebb.php?ubb=get_topic;f=30;t=000846. Some of the folks their have had similar experiences. On this board, when you overclock, you can actually have all the fans come on and everything works, but there is no BIOS that takes over. They make a point that for this motherboard, it is very particular about clearing, you have to a) remove AC power, b) remove battery, c) flip the reset jumper for 5 seconds, d) put the jumper back, e) put the battery back and f) restore power whew.
Oh BTW. “Pro Cooling”:http://www.procooling.com/reviews/html/asus_a7n8x-x.php had a good review of the board and mentioned there is a utility speedfan that lets you control fan speed very directly. This thing is quite noisy, so maybe I can get both the power supply fan and the cpu fan to work with that utility.
“Motherboard-Forum”:http://www.motherboard-forum.com/asus/A7N8X_Deluxe__Spontaneous_Reboot_556851.html. these folks suggest a bad power supply (I have a nice Enermac 350, so that’s not the problem I don’t thnk, although it was better when I had a good UpS on it, but that didn’t work since the draw was too high hmmm.). also suggests bad ram is a cuase. Maybe I’ll take a stick out and see if it does better. Last suggestion was. Also suggests unchecking System Properties/Advanced/Startup and Recovery/Automatically Restart so at least you can see what happened.’
“ABXZone.com”:http://www.abxzone.com/forums/showthread.php?s=&postid=670652#post670652 has another puzzled user with the same problem. seems to reboot without warning.