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After 1.5 months of normal use. No boot. Replaced mobo, same problem! the CPU?

D

dantonic

Member
Hi guys, my friend bought a C2D system a couple of months ago

E6600, 2 GB corsair XMS2, not sure what the mobo is I know its asus SLI cost him about 250. 2 7900 GTXs a nice 700W OCZ PSU that set him back 150, and an antec case.


Anyway just yesterday I guess the computer stopped posting... Imean it gives the first screen the one that says what mobo it is, but it will not allow him to get into the bios.

He has taken the whole thing apart, CPU, memory, videocard, and put it back together, nothing.
cant get into bios. he has put one GB stick at a atime... nothing.

He always comes to me when somethign like this happens. I will be stopping by his place tonight, but I wanted to throw out this topic to save some time. see if any of you had any ideas.

I dont think he has tried clearing the bios yet so I'll let you know what that does.

thanks a lot
 
Use the cmost jumper pin to clear the cmos. If that doesn't work try to boot up the computer with just 1 video card, if that doesn't work then try the other video card alone. Unplug all PCI devices, just have ram, cpu, and a video card and see if it will get past the bios and say invalid startup disk or something to that effect. Then try it with the hd plugged in.

If none of that works then it sounds like most likely the motherboard has gone bad.
 
ok so we reset the cmos, tested each memory stick in each different slot, tested each video card, took off HD so we tried to boot with just basic components.
Nothing

We proceeded to purchase another motherboard: an EVGA 680i.

We just finished hooking everything up
Furthermore my friend also returned the 2 7900GTs and got an 8800GTX.

When we turn the computer on, pretty much the same type of thing happens. it freezes at the beginning screen, where it asks if y ou want to enter the bios by pressing Del.
It does not actually let us get into the bios.

Any suggestions?

On a further note. I guess my friend a while back ended up taking the cpu out and reinstalling it but did not clean off the thermal paste and did not replace it.

Could that have caused the cpu to gradually fry? he also reinstalled it on the current mobo without cleaning off the paste.

Thanks
 
never ever reuse the thermal goop. the next things i would check would be the ps and the possibility of a short. actually, i think the ps is bogus, but the chip and heatsink absolutely must be cleaned (isopropyl 98% or better) and gooped. everybody has a favorite, but you can't go wrong with AS5 + directions.
 
There's only two things that could be wrong, either the cpu is overheating, and the motherboard is shutting down because of the cpu's temp, or the power supply is crapping out (my guess).
 
We do not have any thermal paste... Could we clean it off and try it dry? without any paste? would that work?

We will also test another power supply as soon as we can.
Thanks for the input
 
Originally posted by: dantonic
We do not have any thermal paste... Could we clean it off and try it dry? without any paste? would that work?
Click to expand...
It will work about half as well as the leftover thermal paste that's already on it.
 
what about running the cpu clean without any paste? my friend keeps saying that you dont need the paste that hes run many cpus without it in the past...

is that true? can you run it without with no problems?
 
C2D CPU dont fry

I agree with your friend
IMHO thermal paste is much overhyped - "use artic 5" is like a religion on PC BB.
most put too much on anyway
its far more important the surface of the bottom of HS
it must have not just a shiny HS bottom surface, but a flat shiny surface
the better the surface the less the need for paste
I always hit mine on a 6" wide plate backed belt sander that has a well worn belt
And the C2D chips come with 2 style heat spreaders - a outer ridged one and a plain one
the plain one has less structural rigidity and is subject to warpage - I guess thats why they started making the ridged one - lol
putting paste on a warped heat spreader is a waste of time

if you changed mobo and vid card and no HDD only thing left is PSU

you might try mobo outside of case
and since the vidcards are big juice suckers, you could try some cheap low level card
 
Testing a system without thermal compound might not hurt but even I would do that. But running any system made in the past 6-8 years without compound on a regular basis is just dumb. Without it temps will run quite a bit higher on the CPU(might make it unstable) not to mention shorten its life. Go buy some cheap compound at radio shack if nothing else. Put a pea sized dot on the heatsink and spread using your finger rapped in plastic or something.

AT LEAST leave the leftover compound on. It beats dry regardless. But its his/your friends E6600 not mine.
 
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