No post, no boot, no pc.......

Hi Lads,


I have (or "had" rather....) an HP Media Center m7635.uk on XP Media Center:

PSU
350W

Base processor
Intel Core 2 Duo E6400 (C) DC 2.13 GHz
*1066 MHz front side bus
*Socket 775

Chipset
P965

Motherboard
*Manufacturer: Asus
*Motherboard Name: P5BW-LA
*HP/Compaq motherboard name: Basswood-UL8E

Memory
Memory Installed 2 GB
PC2-4200 MB/sec
Type 240 pin, DDR2 SDRAM

Hard drive
*400 GB SATA 3G (3.0 Gb/sec)
*7200 rpm

16X DVD(+/-)R/RW 12X RAM (+/-)R DL LightScribe SATA drive

Video Graphics
ATI Radeon x1650se

* 512 MB DDR memory
* I/O Ports: S-Video, DVI, VGA

Television
TV tuner card
Sound/Audio
Integrated High Definition audio

* Realtek ALC 882 chipset
* Supports up to 8 audio channels
* Dolby Pro Logic II compatible

Network (LAN)
Integrated 10/100 Base-T networking interface
Memory card reader


Then I replaced the HDD (400Gb), the Graphic Card (8600GTS) and the power supply (600W).

Switched it on: the fans stopped after a split second and nothing afterwards, no post, no boot...
I came back to my old config: same thing.

The guy at PC World suspecting the mobo, I bought a Gigabyte GA-965P-S3(rev. 3.3) which obviously didn't fit in my HP microATX case... Lucky enough I had another ATX case: here, nothing still.

So if you followed the story, the only parts which remains unchanged are the CPU and the RAM. Do you guys think it comes from there?

Can a faulty CPU/RAM explain the absence of POST and PSU turning off by itself (looks like the PSU doesn't function because it seems to have detected a shortcircuit somewhere....)

All kind of help welcomed !


Cheers !

Well, with a dead CPU the machine would fire up and stay on; however you wouldnt be getting a post. As for the RAM, that would had been the 2nd thing I would have looked at behind the PSU.

In short, check to see if your RAM is borked.

Cheers,

Will do the check for the RAM tonight... I'm still getting a new CPU....

PSU = they seem to work fine.

Hi Lads,


Ok Got myself a Core 2 Duo E6850, 4Gb of RAM (1Gbx4), a New PSU (Cooler Master 620W.

So here is what I tried:

- plugged in the New CPU, New RAM (just one in DDR slot 1) and New PSU to the Gigabyte Mobo: No go. Still the same. Fans kicking in for a split second and dies, blank screen.

- plugged in the New CPU, New RAM and New PSU to the old mobo: Fans kick in but nothing on the screen.

So what's that all about? I am entirely lost on this subject.

Evongugg>> you mean the CMOS? The Gigabyte is a new mobo and it hasn't boot yet...

Please Help !

sounds like you forgot a power connector...........

Are you grounding your machine out?....

Yes, is the unit making contact with any surfaces that may ground your machine?

grounding out I think he ment to say are the standoffs used properly under the board. If one is hitting the underside of board it will short circuit.

So at this point what is New? Everything? Whats the part tally now, and list old and new so we know.

Xtreme:

Here is the list...

CPU Intel Core 2 Duo E6400 1 year old
Intel Core 2 Duo E6850 new
PSU HP no brand 350W 1 year old
Jeantech 600W new
Cooler Master Real Power 620W new
Mobo ASUS P5BW-LA 1 year old
Gigabyte G965P DS3P new
RAM 4 x 512Mb DDR2 533Mhz no brand 1 year old
4 x 1Gb DDR2 800Mhz Elite new

Grieve, no chance because I short the power pins with a jumper.

And yes I have checked everything so that it is not short circuited...

This is becoming a mystery. I am really confused.

I agree with major. Build it outside case, easier to work with too. Then I would have just the psu, mobo, cpu, 1 stick of ram, video, keyboard and monitor. Make sure the cpu fan is in the proper fan header on mainboard. No hard drive cdrom etc. Try it that way.

Hello,

I'm having the same problem. How do I resolve? I'm not sure I understand your solution. I saw on the diagram what appears to be the header. I've attached a link I found of pictures I've found for the motherboard. Could you let me know in detail how to resolve. This is driving me nuts! THanks in advance for the help.

C.J.

http://h10025.www1.hp.com/ewfrf/wc [...] ct=3299181

my issue was the same no post no beeps no video. on the hp multimedia pc. my problem turned out to shorted pci slot or card.... (wireles pci card). removed it.. and all works fine. But I first replaces the power supply and video card.. and nothing... take out wireless pci card... and walaaa... hope this helps someone else....

ruben.. h