No beep - no post - with new barebones system
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From: daviddschool on 25 Dec 2008 14:55 I just got a bare bones system for Xmas with a Biostar MCP6P-M2 Socket AM2 motherboard, 4800 AMD CPU, 250 gig HD, 2 gigs of RAM etc. I put it together BUT I cannot get the monitor to connect (stop blinking) and it does not BEEP or POST on BOOT. What happens is this: The system turn on, the monitor continues to blink. After about 10-20 seconds, the computer shuts back down on its own. The screen never comes on. I have tried removing the RAM, floppy drive and HD; in other words, I tried to different setups to see if something was amiss with any of the parts. Still no POST or beep. The CPU is getting hot, so I am hoping that the CPU is ok. I wondered if the Mobo is shot, but I couldn't understand why the CPU would get hot is the MOBO isn't working. I tried a PCI-E video card as well as the built-in video and it gives me the same result - no beep, no post. The monitor doesn't seem to connect for some reason. I took off the CLEAR CMOS jumper, moved it to another location, still no go. The fans go on, so the PSU seems to be ok. When the HD was connected, that seemed to work fine as well, I could hear it go on, but the computer does not seem to get to the BIOS for some reason. I know it is barebones and I am aware of the fact that I might have to return it. I was just thinking if there was something I could have missed in all of this. Thanks and merry Xmas.
From: daviddschool on 25 Dec 2008 15:26 > The fans go on, so the PSU seems to be ok. When the HD was connected, > that seemed to work fine as well, I could hear it go on, but the > computer does not seem to get to the BIOS for some reason. > I know it is barebones and I am aware of the fact that I might have to > return it. I was just thinking if there was something I could have > missed in all of this. > Thanks and merry Xmas. Ok, I finally got it to POST - go to the BIOS and then it shuts down again. I have tried a SECOND PSU and found the same thing. I am not sure if there is a loose wire in the motherboard or something, but each time I boot, sometimes I get to the BIOS, sometimes it only boots for a few seconds and then shuts down. I am not sure what the issue is, but seeing it is Xmas day, I doubt I will be able to get a hold of a 3rd PSU. What could cause a system to turn off and on like that?
From: Dave on 25 Dec 2008 15:29 "daviddschool" <daviddschool(a)gmail.com> wrote in message news:7d1631be-b5f3-4311-a8a4-1af1fe7ad418(a)v15g2000yqn.googlegroups.com... >I just got a bare bones system for Xmas with a Biostar MCP6P-M2 Socket > AM2 motherboard, 4800 AMD CPU, 250 gig HD, 2 gigs of RAM etc. > I put it together BUT I cannot get the monitor to connect (stop > blinking) and it does not BEEP or POST on BOOT. What happens is this: > > The system turn on, the monitor continues to blink. After about 10-20 > seconds, the computer shuts back down on its own. The screen never > comes on. > > I have tried removing the RAM, floppy drive and HD; in other words, I > tried to different setups to see if something was amiss with any of > the parts. Still no POST or beep. > > The CPU is getting hot, so I am hoping that the CPU is ok. > I wondered if the Mobo is shot, but I couldn't understand why the CPU > would get hot is the MOBO isn't working. > > I tried a PCI-E video card as well as the built-in video and it gives > me the same result - no beep, no post. The monitor doesn't seem to > connect for some reason. > > I took off the CLEAR CMOS jumper, moved it to another location, still > no go. > > The fans go on, so the PSU seems to be ok. The PSU is an active component. Fans and LEDs are very forgiving. Even a bad power supply will usually run fans and light up LEDs. Your symptoms seems to suggest one of the following: 1) Your power supply is defective and/or too weak to handle your new hardware. Any good name-brand power supply of about 400W or more should handle your system OK, assuming a single video card is installed. But that also assumes that the power supply is fairly new (they get "weaker" as the caps age) 2) Considering a new build, a good possibility is that the power supply isn't compatible with the mainboard and/or you missed a connection. For your specific motherboard, you need a *24* pin power connector (not 20) plus a 4-pin power connector. A common mistake is to forget the 4-pin connector, which would lead to the exact symptoms you write about. I'm almost afraid to ask, but how do you know that the CPU is getting hot? You shouldn't be able to feel the CPU with the cooler installed. But if the cooler isn't installed, the CPU is now DEAD. Best guess: double-check and triple-check the power connections from power supply to mainboard. Then try a -known good- power supply. Known good meaning, NOT the one you've tried already, but one that is either brand new out of the box (probably good) or definitely is working in a similar ystem. -Dave
From: peter on 25 Dec 2008 15:56 If the CPU reaches a certain temp the BIOS would shut the system down. You do have a Heatsink/Fan on that CPU?? and the fan is running?? and its plugged into the CPU fan header on the mobo?? peter -- If you find a posting or message from me offensive,inappropriate or disruptive,please ignore it. If you dont know how to ignore a posting complain to me and I will be only too happy to demonstrate :-) "daviddschool" <daviddschool(a)gmail.com> wrote in message news:202cd2ae-8c15-47b1-b235-4ece8e450ce4(a)w35g2000yqm.googlegroups.com... > >> The fans go on, so the PSU seems to be ok. When the HD was connected, >> that seemed to work fine as well, I could hear it go on, but the >> computer does not seem to get to the BIOS for some reason. >> I know it is barebones and I am aware of the fact that I might have to >> return it. I was just thinking if there was something I could have >> missed in all of this. >> Thanks and merry Xmas. > > Ok, I finally got it to POST - go to the BIOS and then it shuts down > again. > I have tried a SECOND PSU and found the same thing. I am not sure if > there is a loose wire in the motherboard or something, but each time I > boot, sometimes I get to the BIOS, sometimes it only boots for a few > seconds and then shuts down. I am not sure what the issue is, but > seeing it is Xmas day, I doubt I will be able to get a hold of a 3rd > PSU. What could cause a system to turn off and on like that?
From: daviddschool on 25 Dec 2008 16:14
> > > Ok, I finally got it to POST - go to the BIOS and then it shuts down > > again. > > I have tried a SECOND PSU and found the same thing. I am not sure if > > there is a loose wire in the motherboard or something, but each time I > > boot, sometimes I get to the BIOS, sometimes it only boots for a few > > seconds and then shuts down. I am not sure what the issue is, but > > seeing it is Xmas day, I doubt I will be able to get a hold of a 3rd > > PSU. What could cause a system to turn off and on like that? Ok, I think I have discovered the issue, much like what you have mentioned. I don't have a CPU fan on it. I looked in the box and it didn't come with one. It makes sense - when I leave it to cool, it boots for a while to the BIOS, but when I try repeated boots, it doesn't get very far. Going to buy a CPU fan tomorrow. That is a good thing, at least I have eliminated other possibilities, even though it is going to cost me about 30-40 dollars more. |