Unstable Hardware test after upgrating Ram

Hello, i was upgrated RAM to my MBP - LATE 2011 15" , i7 2.4 ,
to Mushkin 8GB DDR3 1333MHZ PC3-10600/10666 204pin .
After i run Apple Hardware Test, and sometimes jumps out a ram error, i use the test second time, and it shows me no errors. Ratio = 1 time it shows ram error , 3 with no errors.
How can it be ?
4MEM/9/400000000 0x851fca98 and 0x84709e18

http://support.apple.com/kb/SP644
2.4GHz MacBook Pro (MD322LL/A)
this RAM : http://www.ramexperts.com/977014a-ddr3-sodimm-2x4gb-8gb-pc3-10600-sodimm-apple-9 -9-9-24-1-5v.html

Similar Messages

Will Apple Hardware Test definitely detect RAM errors?

Hello,
Been having various problems with Leopard/MacBook. Someone suggested running Apple Hardware Test, which I did, in extended + looping mode all night (it cycled 6 times). The test turned up nothing. Can I take this to mean that whatever problems I am having are definitely software related? I am not familiar with the AHT, don't know exactly what it does, nor how I can interpret a "clean" result...
Many thanks for any advice/tips.

No indeed (just "Colin" is fine...)
My problems have mostly been documented by other people, and I have just been monitoring the discussions on these issues.
Specifically (at the risk of getting off-topic):
1) inconsistent shared server behaviour: I have 3 other macs at home - an iBook and a G4 MiniMac running Tiger, and a G4 tower, also running Leopard - and most of the time, the tower doesn't show up at all, but I can connect to it via CMD-K, the MiniMac shows up in the sidebar, but won't let me connect, and the iBook, when it is running, behaves normally. Oh, screen sharing doesn't work either: it tries connect but hangs (except for the iBook, which works). I could connect to all four quite normally after upgrading to 10.5.0, using the sidebar icons. Everything worked fine until sometime after the 10.5.1 update, when suddenly everything went pear-shaped. Nothing has changed in the configs of the other machines, and the iBook and the MiniMac are identical in terms of software config (but behave differently as regards this problem?!?)
Closing Airport and reopening it makes the icons reappear in the sidebar (all of them, G4 tower included), as does relaunching the Finder, but doesn't change the behaviour: I still can't connect. When I try to use the sidebar icon for the tower, it disappears (the icon...)
As far as I can tell, trying to operate shares from the G4 tower works as Apple intended (although I admit I have not exhaustively tested every option, as I don't have unlimited time...)
2) Lost my printer connections, both at work and at home. I managed to reestablish them at work, but I tried so many things that finally I'm not sure what actually worked. No dice at home (shared printer on the MiniMac... same problem as (1) I guess.)
3) the dreaded Keynote spontaneous reboot problem (I placed a reply about that last night here:
http://discussions.apple.com/message.jspa?messageID=6630702#6630702
4) diverse weird things, like
4a)iCal which had doubled all my events the last time I opened it. I had to manually delete one copy of every event I had entered, whereas I made these entries several weeks ago, and had consulted them many times... I'm thinking this is perhaps a result of the brutal reboots caused by (3)? Having deleted all the doubles, iCal seems to be behaving normally again.
4b)screen resolutions on my slave screen suddenly failing to select properly. I move my MacBook between two different external monitors, one at work, one at home, and their resolutions are different. Initially the MacBook had no trouble detecting and correctly setting the resolutions for the two screens, then suddenly my home screen went weird on me, and required a manual reset. Again, this was a once-off, and does not seem to be repeating (yet).
4c)sluggish performance with some apps that are normally quite snappy, like Firefox, which seems to hang a lot loading pages, Keynote (saving is often painfully slow), and indeed, trying to copy a 250Mb file from the tower to the MacBook via Airport (having connected using CMD-K) said it was going to take 33 hrs, which I thought was a bit rich...
4d) hot-swapping a usb pin for a keyboard+optical mouse receiver from the tower to the MacBook sometimes causes something inexplicable to happen to the MacBook's keyboard: both the Caps and the NumLock LEDs come on, and the keyboard has jumped into some config other than what it is normally in (French). I have not been able to determine what the keyboard actually thinks it is when this occurs (3 times now). The command keys (ctrl, alt, cmd) do not appear to work at all. Rebooting corrects it.
All up, pretty irritating, and a huge time waster, as you can well imagine. I stuck a bit of a rant on the discussions the other day in a moment of intense frustration, which got zapped by the moderators (probably not unreasonably!), but not before someone replied suggesting that it might be bad RAM, hence my questions here.

Hardware test turns up RAM error

I get this error when running the hardware test:
2MEM/103/4: SODIMM1/J25UPPER
What does this mean?
This is the first time I've run hardware test since I've had the computer (June 2005) and I've had this memory the entire time, but haven't had problems. The reason I ran this hardware test was because I was having trouble with my wireless connection, so I ran it to see if anything was up. Thanks for your help.

It says either the upper RAM slot RAM board, or the upper RAM slot is in need of replacing. See this replacement program to see if you qualify:
http://docs.info.apple.com/article.html?artnum=303173
If you are getting four language you must restart your computer errors, those could be indicative of your having the problem too, or if you are forced to restart the machine from the power button instead of force quit applications by command-option-escape.
If you are out of AppleCare and replacing your RAM in warranty does not solve the problem, you may need to go to a notebook repair center to see how much they charge different from Apple:
http://www.dttservice.com/
http://www.powerbookresq.com/
http://www.microdocusa.com/
http://www.macspecialist.com/
http://www.techrestore.com/
And follow my backup FAQ before sending it in for repair:
http://www.macmaps.com/backup.html

Disk Util"Filesystem verify or repair failed"& failed hardware test w/CD

Calling all mac gurus...
My trusty MacBook Pro is starting to play up. i.e. crashing unexpectedly & at random, no particular program can cause the screen to dim and a box come up in different languages saying you must restart with a pic of the power button.
the probs started around/after I deleted XP from the laptop, and ran the system upgrade(from 10.5.6 to 10.5.7)
Disk Utility: I run the verify disk on the system volume. results with error:
2009-08-08 17:46:04 +0100: Verifying volume “Macintosh HD”
Starting verification tool: 2009-08-08 17:46:04 +0100
2009-08-08 17:46:04 +0100:
2009-08-08 17:46:05 +0100: Performing live verification.
2009-08-08 17:46:05 +0100: Checking Journaled HFS Plus volume.
2009-08-08 17:46:05 +0100: Checking Extents Overflow file.
2009-08-08 17:46:05 +0100: Checking Catalog file.
2009-08-08 17:46:30 +0100: Invalid extent entry
2009-08-08 17:46:42 +0100: 2009-08-08 17:46:42 +0100: Incorrect block count for file CACHE_003
2009-08-08 17:46:42 +0100: 2009-08-08 17:46:42 +0100: 2009-08-08 17:46:42 +0100: (It should be 279 instead of 282)
2009-08-08 17:46:42 +0100: Checking multi-linked files.
2009-08-08 17:46:58 +0100: Checking Catalog hierarchy.
2009-08-08 17:48:28 +0100: Checking Extended Attributes file.
2009-08-08 17:48:28 +0100: Checking volume bitmap.
2009-08-08 17:48:28 +0100: Checking volume information.
2009-08-08 17:48:28 +0100: 2009-08-08 17:48:28 +0100: The volume Macintosh HD needs to be repaired.
2009-08-08 17:48:28 +0100: Error: Filesystem verify or repair failed.2009-08-08 17:48:28 +0100:
2009-08-08 17:48:28 +0100: Disk Utility stopped verifying “Macintosh HD” because the following error was encountered:
Filesystem verify or repair failed.
2009-08-08 17:48:28 +0100:
I have also run a hardware test after the disk verify didn't work from the install cd.
results on hardware test:
Last Run: 3/08/09 4:24 PM
Version: 3A134
Test Suite: Extended Test
Loop Count: 2
Result: Failed
Failure code: 4MEM/12/40000000: 199640c8
Any help would be much appreciated. as I use this Laptop for work, and cant really send it away anywhere to be fixed.
Message was edited by: Mß

Mß wrote:
so, I have done re-install from the OSX disk - the first time it failed. I think because I selected the option to keep the user profiles/settings etc, may have been a conflict between vers on OSX CD and vers on HDD? I don't know.
No, it can do that. There are clearly other issues.
anyway an error came back saying the disk was corrupt
The install disc or the HD?
now I thought that sorted it. but after doing the updates. and then going to repair the disk permissions/repair the disk it came back with same error. and also the hardware test is still failing.
The system will never be stable until the HD directory is repaired.
- is the version of the hardware tester I have not compatible with the OS or the firmware i have upgraded to? or does the tester just check the integrity of the hardware regardless of firmware & os vers.
If this is the AHT disc that shipped with your MBP, it is fine, regardless of what OS you have installed.
I really would prefer to not start from scratch again. But could this be an user account problem?
No.
I'll set up a new usr acct and use that for a while. just a pain to bring the files over from my current usr acct to the new one.
I believe that's a waste of your time. As has already been stated, at least one of the issues is the damaged HD directory. Until/unless that is repaired, what you install on the HD isn't going to work correctly, if at all. The big question is, is some other part of the hardware causing the directory damage, or did the directory take a freak "hit" and repairing it will resolve things? It's quite possible that bad RAM or the logic board could have caused the directory damage. You're either going to have to bring it in to an Apple Store "genius" bar and see how much they'll test for free, or do some things yourself. For things you can do yourself, apart from trying one RAM module at a time, and running Repair Disk repeatedly (I don't think that's going to do it), you're going to need to either get your hands on Disk Warrior (or comparable utility), or a different HD, or try the HD in an external enclosure, or get your hands on some different RAM to try.

Hardware Test

I have a late 2008 Macbook Pro (silver keys..if that matters)..and I had my itunes on, then I closed the computer lid to make my computer go to sleep, and put my computer back in my case..I was gone for about less than an hour. When I returned I opened my computer and I realized it was off. I turned it back on and it took a little longer to start up than normal and as it started a Hardware Test started.
Does anyone know why this started?..and it was on for only 17 mins and 45 seconds but it didn't move and was frozen, I tried to stop the testing but that didn't work so I had to press the power button and then it started normal and I went to look on my help for the hardware. I went into another test in my hard drive and it was verifying it and then it completely froze and i could not force a quit nothing was working.. my friend didn't know how to help me so he flipped my computer over and took the battery out! it's working pretty fine now but i was just curious what had happened so if anyone can please explain what happened.
thank you

I believe that the AHT is actually installed on some models of the MBP, and you can access it by holding down "D" as you boot up. Now why it booted to the hardware test after being off I can't say.
Were you in Disk Utility trying to verify the drive when it froze? If so, you might want to boot from your install disc and navigate to Disk Utility on it and then see if you can repair your startup disk. Repair it until there is nothing left to repair. I'm wondering if you might have some directory issues that are contributing to this problem.
It sounds like your friend may have reset the SMC:
http://support.apple.com/kb/HT1411?viewlocale=en_US
I don't know if this is the entire story, but it's my 2¢ worth. Maybe someone else would have some further insights.
Good luck!

Error Codes after Apple Hardware Test...

After someone here told me I've been experiencing kernel panics, I did some digging on the x lab site and re-ran the Apple hardware test in loop mode. after 17 runs, it returned the error:
4MOT/2/40000005:Right Side
I can't seem to find a list of error codes anywhere. My MBP has two 1GB RAM chips, both were pre-installed when I got the machine from Apple. I haven't tried switching them to see if the same error is returned on testing or with ONLY one or the other installed to see if this is truly a RAM issue. I thought I'd post to the forum for ideas first...

I'm afraid I have no idea. If you have AppleCare, I would ask them about the error code. You do have a different error code (/2/ not /1/ and different number after the second slash) than the link, so perhaps it is not a fan motor that is your problem, though I'm hard-pressed to think of what other motors the MBP has (I don't think the hard drive is on the right side, for one.) Alternatively I can imagine, since you said it took you 17 tests to get the result, that this is an intermitent problem--for all I know, just a slightly loose/poorly soldered wire--and so istat hasn't detected the problem yet.
I think AppleCare or a Mac Genius is your best bet, if you have the one or can get to the other. In particular, unfortunately, Apple does not seem to publish the hardware error codes; it only makes them available to techs.
Good luck!

Power PC G5 continues to crash after OS re-install and hardware tests.

I have a Power PC G5 (2005) running 10.4. and have had trouble with crashing within a minute or two of booting or re-booting, and this after absolutely no trouble for 5 years and regular updates. After looking up the issue and potential fixes, I ran through a battery of possible solutions including repairing the permissions. Still no go.( I installed 3rd party RAM back in Jan of this year, but no problems until Mid September. Ran Hardware tests and everything passed.) I reinstalled the OS from the original discs thinking it was a last resort but a sure fix believing it to be software...crashed in 2 minutes after the first boot (post install)....from what I am hearing / reading it could still be the HD or RAM, but since it passed the Hardware test, I'm a little confused... Any suggestions?
I have had some recommendations by BDAquq and will follow up on those...BDAqua recommended posting a new topic.

BD is right on Hardware Test not doing a very good memory test. Memtest is better, as it does more of the litany of tests that are traditional, going back many decades to tests you manually keyed into the first few bytes of RAM on the first mini-computers. (That was fun, believe me.)
Having said that, one strategy is to selectively remove RAM in pairs and reboot to see if the problem continues. That may need to be repeated, swapping DIMMs in and out to see if one of them has a problem. If the problem persists when all of the DIMM modules have at one time or another been swapped out, then you can rule out memory. If it goes away, you have found your culprit.
If that doesn't locate a bad DIMM, then you have to start looking at panic logs to see what is going on there. I discovered a bad USB device in that manner a couple of years ago (wireless mouse transceiver) so it can be done.
Not to play off on the last paragraph, but these problems sometimes devolve into a "mouse hunt" like in the movie with Nathan Lane. Hopefully, you can ftrack down the cause of this very annoying development.

Expanding RAM with G4 MDD did not pass Hardware Test

Hi,
After installing two extra 512 Mb PC 2700 RAM the Hardware Test showed the Error Code: mem_4/7DIMM1/J22
Changing the position of the RAM Modules did not help.
Does anyone know what this Error COde means and how I can solve it??
Thanx for answers

Hi-
Welcome to Discussions!
The test means that one of the RAM modules, or the slot, is bad.
Try removing the new RAM, and see if all is returned to normal. Then, add one RAM module, and check. Finally, the second RAM module. This way, you can determine which RAM module, or slot, is giving you trouble.
The Apple document #113867 explains the test codes, but, the document isn't found on the Apple search. Just a guess, but the RAM, or slot, closest to your graphics card is giving you the problem.

V Ram failing Hardware test with error 2NVD/1/4:2122

Hello,
I have been using my Mac now for just over a year now, it was a wonderful birthday present last October. I have had zero problems until now.
Red wavey lines started to appear on the screen on and off for 2 - 3 minutes and then the Mac asked me to restart, after restarting the wavey red lines were constantly on the screen but it would not get to the login screen. I ran a hardware test which when reaching VRAM told me the above error code.
Does anyone know how this can be fixed at all? or had a simelar problem?
Thanks

Hi,
I'm sort of in the same situation as you. Purchased my powerbook last july. Has worked like a charm until the last few weeks. My mac suddenly froze while playing Warcraft 3. After shutting it down, and rebooting it, i would get this message telling me that i had to restart my computer (from what i found out, that message was kernel panic). I've also had all these little lines on my screen, and while i couldnt get to my login screen under a normal boot, i could safe boot it. I've tried everything i could think of, from doing a disk utility repair, up to re-installing OSX. I finally took it in to an apple service center, and that's what it was. The VRAM failed the hardware test. The only cure is to replace the logic board... which means 750$(Canadian) + Labor + taxes. he said it would probably be around 900-1000$ to fix it. Now, considering this powerbook is worth about that amount of money on ebay, (in working condition), i am very dissapointed as my warranty expired about 2 months ago.
Tough luck mate.
Powerbook G4, 12'', 1.5 GHZ, 768MB RAM, 60GB, Combo Mac OS X (10.4.8)

Hardware Test: Video Ram "error code 2NVD/1/4:119" G5 2.7 NVIDIA 6800 Ultra

Wondering if anyone has experienced this . . .
My G5 started displaying rows of chevron shaped artifacts a few weeks after upgrading to Leopard, Bought a used replacent card and it seemed to fix the problem for a couple of weeks then too started displaying the artifacts, ran the Hardware Test on both cards and both had Video Ram error code 2NVD/1/4:2119
I'am reluctant to buy yet another card untill I'am sure its not a Leopard Issue. any ideas?

I need to do more troubleshooting of my problem before I trying to reflash I think . . .
the other day I had a friend install both my original card and the newly purchased "used" card in his G5 and he also got the error codes on both of them. Brought them home installed the replacement card reset the SMU and PRAM as I've done many times before and got the G5 up and running (after several reboots) no artifacts seemed to run perfectly for a couple of hours anyway when I tried restarting and then the problems returned, gets to the grey screen with the rows of artifacts then stops, screen goes black then the fans start slowly spooling up to max RPM (most likley from a kernel panic) logs show;
"Apparent UniNorth Hang: AGP Status"

MBA (mid-2012) SSD failure after 8 weeks Hardware Test

Brand new MBA mid-2012 (8GB RAM, 128GB SSD running ML 10.8.0).
Failed to startup - Apple logo on grey screen appeared, then the spinning gear wheel, then a blank screen, then the spinning gear wheel, then a blank screen, repeating ad nauseum...
I reset PRAM and SMC - no change
I opened in Single User Mode to run fsck - no change, then in Verbose mode to see what messages appeared (flashing messages of appleid verification timeouts)
Disk Utility - no problems detected
DiskWarrior - no problems detected
Tech Tool Pro - (1) SMART check picked up 7 SSD failures/errors:
[Wear Levelling Count, Program Fail Count(total), Erase Fail Count (total), Power-off Retract Count, Media Wear Out Indicator, Total LBAs Written and Total LBAs Read all 7 FAILED], remainder of SMART tests passed, and SSD PASSED SMART check.
Then (2) Surface Scan checked all 236+million blocks, NO BAD BLOCKS identified/detected.
Very strange indeed!! - booted into Recovery Drive, verified and all ok, no problems starting from this partition! Problem lies on normal boot partition (of course...!)
Was able to boot from external ML HDD and was able to pull all files off Air (interestingly Carbon Copy Cloner reported one text file sitting on bad block and was unable to copy/clone)
Time to get serious: Spoke with Apple Tech here in Australia late on a Saturday pm (thanks Olin!)
Ran Apple Hardware Test in Extended mode [took me back to System 7 days with very old icon!!] - took around 1hr and reported error "4HDD/11/40000000 SATA(0,0)" so it looks like new MBA is heading back to Apple!
I am thinking about re-installing ML from the Recovery Drive in case I can get the MBA running again to make sure I have all my file backed up, but it looks like an 8 week old MBA is no more...
anyone else seen this in mew MBAs? would hate to think I am the only one! plenty of other discussions around this error on HDD machines, but haven't found anything for this error for a SSD.

I have a 15-inch, retina, 2.7 GHz, 16 GB RAM, 768 GB flash drive MacBook Pro notebook, running 10.8.2
I have noticed that if I run the extended hardware test while connected to the power supply I do not get the error 4HDD/11/40000000:SATA(0,0) but if I run the same test while on battery power I get that error.
Does the same happen to you?
Any idea of what the problem is?

Macbook dies after 2008-005 security update: even hardware test not working

My Macbook no longer boots after installing security update 2008-005. Behaves as if HD is dead, AND as if boots from SuperDrive are broken too.
Sequence of events:
1. 10.5.4, Software Update notifies me of update.
2. I permit it. Immediately requires a reboot.
3. Go away for several hours.
4. Upon return, I notice the Leopard outer-space background.
5. Spinning beachball when I move the mouse.
6. Go away for several minutes.
7. Return. No change. Power down computer.
OK ... by now, you may be saying that it might still have been updating and I shouldn't have interrupted it.
But since then, the machine behaves not only like the disk is dead, but I can't even get a hardware test to run from DVD.
So, to continue.
8. Start machine again. Apple boot sound. Nothing on screen.
9. After a while, flashing "folder" icon with question mark.
Since then I've attempted to boot in safe mode, verbose mode, FireWire target disk mode (against a 10.4.x box), boot from original install disk, boot into hardware test mode from original install disk. None of these things worked. I've reset the PRAM.
The only diagnostic activity of all of these that has produced any different feedback is the PRAM reset (which sounded the Apple boot sound a second time). Everything else does not work. If the HD was dead, I could understand that none of the attempts to boot into FireWire target disk mode, or to boot from DVD and then expect to see the HD mount in some way, would work. But since it doesn't even boot the hardware test from the DVD, I'm really baffled. Any ideas? Thanks.

Well, my solution was to buy DiskWarrior and copy what I could (which was a lot, thankfully) to a FireWire external disk, then reinstall. DiskWarrior reports S.M.A.R.T. status OK, so I've gone with a fresh partition in Disk Utility and successfully installed 10.4 from the original DVDs.
Have also run Apple Hardware Test and had no problems, so I've decided to trust the drive in the short term.
Unfortunately, now, 10.5 upgrade disks won't finish and guess what ... a partial install of 10.5 breaks the 10.4! So, the machine has a recognizable startup disk but justs sits in a loop rebooting itself, presumably as it hits some inter-10.4/10.5 state and gives up.
Next up I tried to restore my 10.5 from a wired ethernet connection to my Time Capsule. Having never once been able to browse my backups in Time Machine under 10.5, I was somewhat surprised to find that the 10.5 Installer was happy to let me try a restore from the Time Capsule. It crunched away until it was happy that I had enough space on my new partition, and then did what seemed a pretty instantaneous restore. The Macbook reboots and ... can't see the startup disk.
Maybe my disk really is on the way out.

I have an iMac mid 2010. After Disk utilities said the drive was corrupt, I ran the hardware test (extended) 3 times. No problems. I than ran Disk utility again and got 2 messages in red-keys out of order, and --Volume corrupt, can't be repaired. I tried

I have an iMac mid 2010. After Disk utilities said the drive was corrupt, I ran the hardware test (extended) 3 times. No problems. I than ran Disk utility again and got 2 messages in red…keys out of order, and ……Volume corrupt, can't be repaired.
I tried to do a system install, but message said…disk can't be changed. Will a complete erase and install fix this ?
Everything is backed-up.

There's hardware and software.
Your drive could physically be in good condition but something has caused the file structure to be messed up (it just happens sometimes). The directory that keep track of files is corrupt. Disk Utility can help determine if that is the issue. In some cases it can repair the problem but it cannot do it to a drive that is being used to boot the system while you are doing that. You have to boot from another drive. Some things DU cannot repair and you need to try a stronger utility such as Diskwarrior.
A failing hard drive (one with mechanical issues) can be a cause of file structure issues but this is by no means always the case. Apart from looking at the SMART diagnosis feature of Disk Utility (and smart isn't totally reliable) there often isn't a way to tell if a drive is failing until it suddenly happens, which is why you need to maintain backups.
In your situation it does sound serious and not just minor directory corruption. You can try erasing (formatting) the drive, You may need to do this if it is really corrupt, in which case there could be underlying physical issues. I use old technology but if you have the patience you can try erasing the drive with the security option of writing zeros once (don't do more unless you are going on a 3 week vacation). This makes the drive not simply assume everything is okay by forcing it try every part of the drive by writing data. If something is gong wrong you may find it marks a lot of bad sectors, or flat out refuses to format. Then you know you need a new drive.

Error Code After Running Apple Hardware Test

I ran apple hardware test (I'm having problems where my computer freezes for like 10 seconds with the mouse being movable... but it happens very frequently. like once a minute. it's SOOO ANNOYING)
this is the error i got after running apple hardware test:
(it came out as a Mass Storage error... which is Hard Disk i guess)
**ERROR*CODE***ERROR*CODE**
2STF/8/3: S-ATA Bus 0-Master
**ERROR*CODE***ERROR*CODE**
Does anyone know what I can do to fix it. Apple Hardware Test only allows me to find the error and then restart or shut down... which is useless cause what is the error code supposed to mean. I've only got Apple 1 yr repair support left... so I cant call up Apple or anything. Does anyone know anything about this and what I could do to fix it!?
I know about this: http://www.apple.com/support/imac/repairextensionprogram/
I might go to the apple store, but I dont wanna make a trip out there for nothing.
Does anyone know what I can do or should I just take it to the apple store.

Actually, i just spent like 1 hr working with disk utility using the os x install disk and i think it finally worked. im so happy for myself! yay... i wouldnt accept no for an answer. Disk utility kept saying "oh first aid failed because it didnt exit right" or something... total garbage response... i kept pressing verify disk and then repair disk and then i did the verify permissions and repair permissions too... didnt really know what i was doing with the permissions... but it finally worked so thats all that mattered! yay... its back to normal!!

MacBook won't boot after trying to repair with Disk Utility. Cannot boot in Safe Mode. Just powers down after about 5 minutes. Apple Hardware Test says error 4SNS/1/40000001:IG0C-0.265 But I cannot find anything on the net about it. MacBook 4,1 Intel.

Hello Everyone,
I am in dire need of assistance I am hoping someone could provide. I have a MacBook 4,1 with Intel Core 2 Duo processor 4GB Ram. It is taking over 10 minutes to boot up past the gray apple screen when I turn it on. First I cleared the PRam (?) then I checked the disk using Disk Utility Verify, and it said the disk needed repairs. So I ran the disk repair and it said it was unable to fix the errors on the HD.
I did a little research and tried booting into the Single User mode, then running /sbin/fsck -fy. It said that it found errors but could not fix them. I ran it two more times as suggested and got the same result each time. I then tried rebooting and now instead of taking 10 minutes to boot up, it takes about 5 minutes on the gray apple screen and then just turns off. I started in Verbose mode to try to troubleshoot the error and it appears the last thing to come across the screen before power down is a message "Apple Yukon 2: RxRingSize <= 1024....etc".
I decided next I would run the Apple Hardware Tester. The test came back with an error code "4SNS/1/40000001:IG0C-0.265". I am very good at searching the web but I could not find any errors that had the IG0C or IGOC or any combination at the end, but plenty of 4SNS/1/40000000(1) errors with different endings. From what I can tell people are saying anything with 4SNS/1/4000000 is a logic board failure, but this computer was literally just booting this morning until I did the /sbin/fsck -fy.
Any suggestions are welcome and appreciated.
Thank you for your time.

You've a couple of issues .... when Disk Utility tells you it can't repair a drive, if the error is a soft error, like an invalid tree or node, Disk Warrior (or TechTool Pro) can handle it. However, if Disk Warrior (or TechTool Pro) can't handle it, you can erase and write zero's to the hard drive and restore to it, or you can buy a new hard drive. Sometimes running SMART Utility can provide additional insight into the health of the hard drive.
THe 4SNS error is a sensor error. You could install iStat Pro to see if something is indeed getting too hot or remaining room temp or less. You may need to take it into an Apple shop so they can use their thermal diagnostics to test and isolate it further.

Unstable Hardware test after upgrating Ram

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