yi ai bao Posted October 18, 2006 Posted October 18, 2006 i'm using P4 2.5 GHz on Asrock P4I45gx_PE MOBO with 128MB RADEON 9200 SE AGP, 256MB DDR. one time the system just won't boot. i checked if it's a memory failure and it's not. the CPU fan stops at start up and turns back on in a second then it beeps once. i tried turning on without the memory. It detects that there is no existing memory but less than 10 seconds the CPU fan stops and the system is dead. could it be that there is short circuit somewhere in the MOBO? could it be that the CPU is dead? could it be a MOBO problem? or the BIOS is corrupted? it shows a message during post diagnostic "CMOS Settings Wrong" but just as i entered the CMOS settings interface, the system turns off. i tried to turn it back on but it doesn't power up. the CPU fan just spins for a while and then turns off.. PLEASE HELP ME... Quote
TCH-Andy Posted October 18, 2006 Posted October 18, 2006 Hi yi ai bao, welcome to the forums. What Bios do you have? 1 beep could be either "everything OK" or a memory / motherboard issue, depending on your Bios. Since you say it's not memory, then the indication from the Beep code is that it's all OK. In which case, I'd turn to the power supply. Have you got a spare you can try? Or try unplugging all non-essential items (CD, DVD...) and trying then. Quote
Head Guru Posted October 18, 2006 Posted October 18, 2006 Do you get any video at or before post? If you do, I would agree with Andy - look at the PSU. Quote
TCH-JimE Posted October 18, 2006 Posted October 18, 2006 Hello and welcome to the forums, Do you only ever get one beep? Also, have you tried a new battery in the CMOS? Remove all drives and just leave a single memory slot in. Find the manual and make sure that any jumpers that you may have open or to reset are closed JimE Quote
stevevan Posted October 18, 2006 Posted October 18, 2006 If you are a bit technical-savvy and have a DC volt meter, you can check the voltages out of the power supply. See this page for some info that might help you out. Quote
TCH-Dick Posted October 18, 2006 Posted October 18, 2006 If you are a bit technical-savvy and have a DC volt meter, you can check the voltages out of the power supply. See this page for some info that might help you out. I guess, I always just stick my tongue to it. Quote
Head Guru Posted October 18, 2006 Posted October 18, 2006 Dick, If you dont have a volt meter, you could always stick your tongue on the psu leads to check for power Quote
TCH-Dick Posted October 18, 2006 Posted October 18, 2006 Really? I was just joking but I will try it now. If I'm not back soon........ Quote
stevevan Posted October 18, 2006 Posted October 18, 2006 Dick, If you dont have a volt meter, you could always stick your tongue on the psu leads to check for power That's on the INPUT leads Quote
Redeagle Posted October 18, 2006 Posted October 18, 2006 (edited) I had something similar happen once, and it turned out the MB was fine, except for where the fan plugged into it (loose or something) I bought an adaptor to plug it directly into the power supply and it worked fine (until I got a new mb and rebuilt it again, but that's another story) fairly cheep and simple thing to check before replacing major components Edited October 18, 2006 by Redeagle Quote
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