New Computer, Won't Boot :(

J

jcutner

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Oct 13, 2007
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I'm stumped. First time posting here,

I'm upgrading my computer, so I purchased the Asus P5B mobo, E6750 and 2x1gb Corsair DDR2 800mhz Ram. I currently have a 650W Coolermaster PSU and I also tried an Antec 430W PSU.

I took out the old mobo, etc (3800 X2, A8N-SLI, 2x1gb Corsair DDR400) put in the new motherboard, put in the CPU, dropped on the HSF, put in the ram, put back the video card (keeping my 7800GT for now) Plugged in all the power cables, plugged in the case pins to the motherboard.

I plugged in the power cable to back of the PSU and switched it on from there. The green light comes on, on the mobo. When I press the power button on the front, NOTHING happens. I tried switching around the PWR SW pin so many times, and nothing at all. I even tried another PSU as well.

I'm completely lost here guys. Thanks for any help.
 
when you say nothing happens do you mean no fans no nothing.do you have any warning lights or beeps so you can lookup in the owners manual for possible error codes.try resiting the cpu,pull all ram but one skick.swap out ram,try different slots go barebones just enough to power on system.pull main power supply lose from board and reapply.the list goes on.you are at least getting some power if a light comes on.
 
DrDoU said:
when you say nothing happens do you mean no fans no nothing.do you have any warning lights or beeps so you can lookup in the owners manual for possible error codes.try resiting the cpu,pull all ram but one skick.swap out ram,try different slots go barebones just enough to power on system.pull main power supply lose from board and reapply.the list goes on.you are at least getting some power if a light comes on.
Click to expand...

correct, no fans spin up, not the CPU fan, Case fan, or PSU fan. I tried removing one stick of ram, unplugged the power from my video card. The only light that comes on is the one green LED on the board itself. I completely unplugged the PSU and tried another PSU as well, to get the same results.
 
The P5B is old, and may not have the BIOS needed to detect the new E6750. However, fans should spin up. Jump start the PSU to see if it works.

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If you have both the 20 OR 24 pin main ATX connector plugged in, AND the 4-Pin ATX12V P4 CPU connector plugged in (or 8-pin EPS connector), then the board should boot fine.

You could test the PSU. Jump start it (on the main atx connector, short the green wire with any black wire, using a paperclip), and see if it stays on. If not, then its a faulty PSU. If it works then proceed.

Setup everything outside of the case, with the mobo on top of its cardboard box. Plug in only the essentials:
- PSU (namely: main 20/24-pin ATX connector and 4-pin ATX12V P4 CPU Connector)
- CPU w/ HSF
- Single stick of ram
- Videocard if there is no onboard video
- Monitor
- Keyboard
- Use a screwdriver if your board doesnt have an onboard power switch
- System speaker/buzzer

Jump the two power switch leads to turn the power on. If it won't post, try different RAM slots. If it won't post, pull out the ram (so no ram in the system) and listen for error beeps. If none, pull the vidcard and listen for error beeps. If none, re-seat the CPU/HSF and try again.
 
I've been talking to some of my other friends, that work at computer shops.

I'm almost positive it has to be the motherboard, since it natively doesn't support 1333FSB unless it has a BIOS update from January, and of course I have no way of knowing that. So I packed the motherboard back up in the box, and I'm going to exchange it for a motherboard that fully supports 1333FSB tomorrow.

My other friends also purchased the E6750 chips this week, after I told them I was going to get it too, but they each got different motherboards which supported 1333FSB natively, and their's worked fine.
 
Yah, but like I said, the fans should still spin up.

Anyhow, go for one of these boards if you can:

$91 - abit IP35-E LGA 775 Intel P35 ($20 MIR)
$100 - Gigabyte GA-P35-DS3L LGA 775 Intel P35
$130 - Gigabyte GA-P35-DS3R LGA 775 Intel P35
$145 - abit IP35 LGA 775 Intel P35
$135 - Asus P5K LGA 775 Intel P35 Express
$155 - Asus P5K-E/WIFI-AP LGA 775 Intel P35
$170 - Gigabyte GA-P35-DS4 Rev. 2.0 LGA 775 Intel P35
$180 - Abit IP35 Pro LGA 775 Intel P35 ($20 MIR)
 
I was going to get the Asus P5K-SE, about $115 Canadian. Seems like a fairly average board, but supports 1333FSB. It is strange how none of the fans spun up, but as I was saying, the PSU was working beautifully just earlier in the day on my AMD mobo, and I also tried another PSU which I know works, just has compatibility issues with that particular AMD mobo, and that didn't make the fans spin up either.
 
your mainboard has probably taken a dirt nap.the only thing i can tell you is to take it to a shop and have it checked out.the best way to know far sure
 
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