Hi, I admit my hardware knowledge is dated from the 90s, but figured it's all about the same.. trying to fix a computer for a friend, I have a Celeron D 3.06 478 processor in an Asus P4B533-VM (onboard video, etc) motherboard, but for whatever reason there is no video at all. Power supply ATX and P4 are connected. What I'm finding weird, is that in the process of turning on and off, the CPU is completely cold .. like it's not getting power. Is this normal? Also, the CPU fan seems to spin faster than normal .. like maybe it's a code that something isn't connected right ? I've swapped RAM, P/S, motherboard, and CPU .. all seems to be the same result, so I'm hoping this is just some peculiar step with the new technology that I'm not aware of.. because these parts likely all work - just not together at this point. Thank you.
Hi and welcome to the form. Most modern computers beep when they go through an initial process called POST (please do not ask me for the initials... ). When you turn the PC on do you get any beeps at all? **Hint: It could be anything from one long/short beep to a series of beeps.**
Other than bus multipliers and dual ddr (same as old rd-ram really) there aren't too many differences since the late 90's. Willz mentioned one though... the 4 pin pentium 4 power lead. Make sure you have that plugged in. If your PSU doesnt have the 4 pin lead I think the Asus P4b motherboards had a molex plug on the board which you can use instead. Try using the DIP switches to set the fsb and pci bus. Its a 133mhz FSB, 66mhz AGP, 33mhz PCI. Here is the manual for the board.... http://www.unitycorp.co.jp/support/download/manual/478/p4b533_vm_e.pdf start reading from page 40. To be honest though if you aren't getting any video output whatsoever (ie the monitor is staying on standby) and the motherboard is good then it sounds like your cpu is down. Ive never come across an integrated graphics card breakdown, at least not without the whole board breaking. It only really leaves your cpu. Especially if there aren't any beeps.
Hi, thanks for the replies.. here is the Asus CPU spec list on their page for the motherboard: ASUSTeK Computer Inc.-Support- It only shows up to a 2.80 Celeron , so that could be an issue - but I was hoping it would at least boot up and run the 3.06 at 2.80 , or something. If the BIOS is old, wouldn't it still at least boot up at some lower speed so I have the opportunity flash it? I've tried both the jumpered and jumperless modes. The ATX and P4 power connectors are connected, as for the other stuff.. I'm aware of the beep codes, but not even getting any video to get to that point. As for the equipment, the prior MSI motherboard and 2.53 Celeron D CPU are both unknown working or not ..it WAS working, then stopped working - which is where I was called on to fix it. I figured it was the motherboard, purchased it from ebay.. that did not solve it, so we purchased the CPU, exact same problem - no video, ever. Both sellers claim they work.. again, I have to go on faith and feedback ratings without having a lot of hardware at my disposal to try out.
I guess You're out of luck that mobo is not supporting Celeron D which is different CPU than Celeron, if You look at other mobos on Asus CPU support Celeron D support is mentioned separately.
i would think there is a bios update to have higher speced celerons, the celeron d is like a pentium 4 prescott with a few features of the pentium 4 not there.
The updates only accommodate up to a 2.8ghz 400mhz fsb celeron. Did you try using the jumpers to run the fsb at 100mhz? This would make it run at 400mhz fsb, 2.3ghz. I cant remember if there are any fundamental differences between the celeron d and celeron c. Seeing as the motherboard supports the pentium 4b at 3ghz and like thc pointed out "Celeron D support is mentioned separately" I fear it may not be the speeds of the cpu but the cpu itself.
update: I got access to a 3rd motherboard in a working system, popped in the 2.53 and the 3.06 celerons and they booted up and yes, the CPUs got toasty hot in 5 seconds... so, I guess I purchased a DOA motherboard off ebay and then the first one just died. I just place Asus on such a high pedestal for reliability that I was in denial. seriously though, I appreciate all the help. You guys do a great service.
