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Lapped CPU = dead mobo/RAM ?!

post #1 of 61
Thread Starter 
(There is a summary at the end, since it is kinda a wall of text.)

Alright.

Got lapping kit Thursday.
Got RAM today.

Put RAM in, booted, found out the new RAM OCed like **** (5-5-5-15 @ DDR2-920 = unstable with 2.3v) and since that was kind of a boner kill, I turn it off and went to lap my CPU.

Go to lap.
Comes out great.

Go to put my rig back together.
It doesn't work.

My RAM has LEDs on it -- ones up top are activity, ones on the bottom are just for show. The ones on the bottom go on, but the tops ones don't...they usually shoot on as soon as I press power.

I clear CMOS, same thing.
Try different slots, same thing.
Try one stick, same thing.
Try other stick, same thing.
Take out all RAM (****, I unno. I didn't know what else to do), same thing.

Clearing CMOS/taking out battery does nothing.
My heatsink* gets warm, plus I let it sit for a minute on, quickly took off the HS, and felt the CPU, and it was warm. Doubt it's the CPU, since I killed a socket A chip before and the chip never warmed up.

It's either RAM or mobo. >_<

My RAM JUST came back from RMA.

I was kind of...er..."violent" when taking out my SI-128, which resulted when it finally popped loose to land on the NB (not hard, I was only about an inch at the most over the NB HSF), so that's one of the reasons I think it's the mobo. Not to mention it killed my SI-128.

So, summary:
  • Lapped CPU
  • Rig sits at black screen -- fans spinning, LAN lights work, light on mobo goes on.
  • RAM LEDs halfway work -- activity LEDs don't (used to as soon as I hit the power) but the bottom ones do.
  • Changing slots, singling out sticks, and taking all RAM out doesn't fix.
  • When I put everything together, it went to the Asus logo screen - but it froze there. I restarted thinking to clear CMOS, which I did, and now it's stuck at black screen.
  • Clear battery doesn't work.
  • CPU and CPU heatsink get warm, so I don't think it's my CPU. I was *really* careful during lapping, as well.
  • I "lightly" dropped my SI-128 on the NB heatsink, but after inspecting the mobo, nothing was hurt.

You're two pesos of what happened?

Sorry if it's kinda hard to read, it just makes me pretty mad that I'm out of a rig for two weeks because Crucial decided to have RAM that died for no reason, then my Thermalright SI-128 base cracks almost in half because it was just made poorly, which might have killed my mobo.)

I honestly hope it's my RAM, because if it's my mobo, I won't have a computer for a longggggggggggg time. They're so slow at RMAs.
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2 OP pls nerf
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post #2 of 61
ESD killed the ram?
post #3 of 61
Thread Starter 
Er...How? O.o ESD killed it when it's in the mobo? >_<
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2 OP pls nerf
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CPUMotherboardGraphicsRAM
i5 6400 Skylake Asus Z170-E ATX EVGA GTX 950 GeIL 8GB DDR4 3600 
Hard DriveHard DriveCoolingOS
Sandisk 480GB SSD Western Digital EZRX 3TB Cryorig H7 Windows 10 Pro x64 
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post #4 of 61
Was everything (including you) grounded?

edit: You could've "shocked" the CPU when you were lapping it?
post #5 of 61
i still wanna say cpu, what socket is this? i know its not your sig rig
post #6 of 61
is there any way to test the cpu and ram in a nother puter?
post #7 of 61
Quote:
Originally Posted by ecoyd1 View Post
was everything (including you) grounded?
he/she dosent need to be grounded u just need to hold the case for 5-10 sec to get the charge out of your body
post #8 of 61
I highly doubt it is the ram because it worked and you didn't touch it. The non-flashing LEDs are probably just indicating that the board is not even making it to post.

I'm guessing it is probably the motherboard. How many times have you closed the lever on the socket with a CPU installed? I heard that socket 775 only tolerates up to 12 installs.

Also as you mentioned it could be the NB. Even though you can't see it, the chip is probably a BGA meaning it's connected with hundreds of tiny balls of solder underneath. It's possible you broke some connections on the NB when you dropped the heatsink on it.

Summay: It's almost surely not the ram, and I'm doubtful it would be the CPU. It's probably the motherboard.
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Main Rig
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i5 2500K Asus P8P67 EVO GTX 980 16GB DDR3 1866mhz 
Hard DriveCoolingOSMonitor
Revodrive 3 x2 240GB, M500 960GB, 2x WD 1TB Rai... Noctua NH-D14 Windows 10 Apple Cinema 30" 1600p 
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post #9 of 61
Thread Starter 
It's my Core 2 Duo.

If it was ESD, then why would it get the POST screen until I restarted? >_<
2 OP pls nerf
(12 items)
 
  
CPUMotherboardGraphicsRAM
i5 6400 Skylake Asus Z170-E ATX EVGA GTX 950 GeIL 8GB DDR4 3600 
Hard DriveHard DriveCoolingOS
Sandisk 480GB SSD Western Digital EZRX 3TB Cryorig H7 Windows 10 Pro x64 
PowerAudioAudioAudio
Silverstone 500w Gold Lepai LP-2020A+ AudioSource LS100 Polk Audio PSW111 
  hide details  
Reply
2 OP pls nerf
(12 items)
 
  
CPUMotherboardGraphicsRAM
i5 6400 Skylake Asus Z170-E ATX EVGA GTX 950 GeIL 8GB DDR4 3600 
Hard DriveHard DriveCoolingOS
Sandisk 480GB SSD Western Digital EZRX 3TB Cryorig H7 Windows 10 Pro x64 
PowerAudioAudioAudio
Silverstone 500w Gold Lepai LP-2020A+ AudioSource LS100 Polk Audio PSW111 
  hide details  
Reply
post #10 of 61
when you lapped, did you dry lap or wet lap? there is a vent on the side of the IHS if you wet sanded water might have went inside, if dry you may have dust in it.
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