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  Tom's Hardware UK and Ireland Forums » Motherboards & Memory » General Motherboard » No post, no boot, no pc.......
 

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kuiksilver
Profile: stranger
More Information
n°1754879
01-21-2008 at 03:22:02 PM

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 !

Related Product

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raven_87
Scarlet & Grey technologies
Profile: Honorary Poster
More Information
n°1754953
01-21-2008 at 10:45:02 PM

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.

grieve
Profile: nimble knuckle
More Information
n°1754971
01-21-2008 at 11:35:49 PM

You need to plug the cpu fan in?

kuiksilver
Profile: stranger
More Information
n°1755019
01-22-2008 at 10:24:44 AM

Cheers,

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

PSU = they seem to work fine.

evongugg
Profile: Eternal Poster
More Information
n°1755042
01-22-2008 at 04:18:05 PM

Try clearing the Bios.


---------------
Scruze my English!
kuiksilver
Profile: stranger
More Information
n°1755173
01-23-2008 at 10:04:37 AM

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 !

evongugg
Profile: Eternal Poster
More Information
n°1755183
01-23-2008 at 01:46:22 PM

Yes try removing the battery on the motherboard for 30 secs. It will clear the CMOS.


---------------
Scruze my English!
WazzaUK
Profile: member
More Information
n°1755196
01-23-2008 at 04:20:42 PM

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

kuiksilver
Profile: stranger
More Information
n°1755201
01-23-2008 at 05:00:39 PM

Well in my knowledge there nothing else than an ATX 24 pins and the 12V 4 pins /or 8 pins which I have both connected...

raven_87
Scarlet & Grey technologies
Profile: Honorary Poster
More Information
n°1755205
01-23-2008 at 05:23:45 PM

Are you grounding your machine out?....

kuiksilver
Profile: stranger
More Information
n°1755209
01-23-2008 at 06:05:48 PM

grounding your machine out???

raven_87
Scarlet & Grey technologies
Profile: Honorary Poster
More Information
n°1755223
01-23-2008 at 08:36:28 PM

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

major53
Profile: enthusiast
More Information
n°1755228
01-23-2008 at 09:14:24 PM

kuiksilver are sure you have the power switch from front on and off btton to the mother bd plugged in correctly,some connectors have plus and minus on them and it may be plugged in wrong!

Message quoted 1 times
Message edited by major53 on 01-23-2008 at 10:10:07 PM

---------------
GIGABYTE p35 ds3l-- e8400 wolfdale-- 4 GIG RAM g.skill 800 -- xfx 9800gtx 512-- OCZ 700 POWER SUPPLY---NZXT Apollo BLUE NP Blue SECC Steel Chassis ATX Mid Tower---acer 2216 wide screenl---logitech 3000 keyboard and mouse--- vista 32 bit
Xtreeme
Profile: journeyman
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n°1755242
01-23-2008 at 11:52:02 PM

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.

grieve
Profile: nimble knuckle
More Information
n°1755245
01-24-2008 at 12:34:24 AM

major53 wrote :

kuiksilver are sure you have the power switch from front on and off btton to the mother bd plugged in correctly,some connectors have plus and minus on them and it may be plugged in wrong!



That’s a very good point…

If any of the connections from the case to the MB (HDD light/reset/power/etc) are incorrectly placed it may cause what you have described.

Just hook the power one up, remove the others and give it a shot.


---------------
Gigabyte X48-DQ6 / Q9550 @ 3.4ghz (400*8.5) / VisionTek 4870x2 / 4GB Mushkin 1066MHZ (2*2) / Xigmatek HDT-S1283 / Antec TruePower Quattro 1000 Watt (Quad crossfire one day) / Samsung 22x DVDRW Lightscribe / Two 500GB Seagate 7200.11(raid 0)