Maximum of RAM installed on HP 250 G1 and Elitebook 8470p PER SLOT.

Hello
I Have a HP 250 G1 and an Elitebook 8470p both using windows 8.1 and i would like to know the maximum of RAM that can be installed per slot. i.e if It has 4 Slots, and i want 8GB, Can put an 8GB RAM in One slot alone or i have to split them?

HP 250 G1
Supports up to 8192 GB of system RAM
Elitebook 8470p
Supports 16384-MB of system RAM
Refer:
http://h20566.www2.hp.com/hpsc/doc/public/display?sp4ts.oid=5359430&docId=emr_na-c03763062&docLocale...
AND
http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c03659338-3.pdf
Wish you luck,
Karthik
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I have a MacBook 7,1 which i recently installed a PNY 250 SSD and added some RAM. The laptop was running awesome with OSX 10.6.8, lightning fast. Then I installed Yosemite. There was a bit of hang during the install, but Yosemite came up no issue

I have a MacBook 7,1 which i recently installed a PNY 250 SSD and added some RAM. The laptop was running awesome with OSX 10.6.8, lightning fast.
Then I installed Yosemite. There was a bit of hang during the install, but Yosemite came up no issue when I rebooted. Here is the problem:
Every other time I boot the MacBook it hangs at a grey screen with the prohibitory sign. Verbose reveals a "still waiting for root device" error. Now if I reboot from that hang, it boots fine, but then will hang again the next time. It keeps alternating like this. Any ideas??
I am not running any third party trim software, so that's not the issue.

I have a MacBook 7,1 which i recently installed a PNY 250 SSD and added some RAM. The laptop was running awesome with OSX 10.6.8, lightning fast.
Then I installed Yosemite. There was a bit of hang during the install, but Yosemite came up no issue when I rebooted. Here is the problem:
Every other time I boot the MacBook it hangs at a grey screen with the prohibitory sign. Verbose reveals a "still waiting for root device" error. Now if I reboot from that hang, it boots fine, but then will hang again the next time. It keeps alternating like this. Any ideas??
I am not running any third party trim software, so that's not the issue.

NEW RAM INSTALL PROBLEMS

hi guys, ive a new 2010 mac pro 5,1 8 core [2x 2.4 ghz ] 12gb
My ram is as follows, 2 x 4gb modules +4 x 1 gb modules [DDR3 ECC 1066mghz]
and all slots are full.
TodayI just purchased two 8gb modules, and now no matter what order of slots i put them in, I can only register the 2 x 8gb chips 16gb of memmory that I juts put in, even if the other slots have 4gb ram modules in them, they dont show up in sysytem, prefs[thats after many flashing power light issues and changing slots] they show up as empty dimm slots in system prefes???
have I exceeded my maximum ram with this machine it is now 2 x 8gb chips = 16gb ????
or do I have to buy 2x 8gb modules to replace my
2 x 4gb modules which are instaled but not now not showing up ??
If i take the new 16gb chis out, and replace all lsots with my old memmory i get 12 gb no no probs, i just cant seem to get past 16???
any help at all would be appreciated troops
many thanks in advance

Hi amoeba23,
I know its too late now, but in your position I would have imported 8GB RAM modules from OWC rather than buy them from Crucial.
Otherwise, I would have waited until Kingston started selling 8GB System Specific RAM modules for 2009/2010 Mac Pros instead.
To the best of my knowledge there is nothing on either the Crucial USA or Crucial UK websites stating that their modules incorporate Apple Specified Thermal Sensors, which probably means that they do not have them, and I would have avoided them for that reason alone.
In contrast the OWC website states that their modules confirm with Apple's specifications in that respect:
http://eshop.macsales.com/shop/memory/Mac-Pro-Memory#1333-memory
Also, there was no benefit in buying 1333MHz modules from Crucial, instead of 1066MHz ones from OWC, because of the limitations of the memory bus speed of your Mac Pro model.
For anything smaller than 8GB RAM modules I always advise UK enquirers to buy Kingston System Specific memory for 2009/2010 Mac Pros, because their modules are manufactured to Apple specifications, including thermal sensors. Personally, I use nothing but Kingston RAM, which has been 100% trouble-free for me, and because I know that their System Specific range of memory has been thoroughly tested for compatibility before being released for sale. Plus there are numerous resellers of Kingston System Specific RAM in the UK.
In addition, and very recently, there were several reports of problems with Crucial's 4GB RAM modules in 2009 Mac Pros, and Crucial UK admitted that they were not compatible, and had to issue refunds.
That is another reason that I would have steered clear of their 8GB modules.
Unfortunately, Kingston do not yet market System Specific 8GB RAM modules for Mac Pros. Quite probably this is because Apple do not sell them, and have not yet officially approved this capacity for use in their Mac Pros. I say this because Kingston did not start selling 4GB RAM modules for 2009 Mac Pros until around about the same time that Apple did.
Regards,
Bill

Satellite C55-A-19N: 4GB RAM installed but only 2,39 is usable

Hello,
I have Toshiba satellite C55-A-19N with Windows 7 32-bit. It has 4 GB of installed memory, but only 2,39 is usable.
Bios is the last.
I can not find anywhere in the system the ability to change it.
My desktop with core i5-2500K can see 3.29Gb from 4Gb RAM, why toshiba cant see it?

The shared part depends on the RAM amount which is installed.
The notebook description and the NVIDIA GeForce 710M details says this:
Video card: up next to 3787 MB with 4 GB system memory installed
and up to 4,095 MB with 6 GB of system memory (64-bit Windows operating system only).
So the shared part seems to be bigger than 300MB.
By the way:
open msconfig using search
in msconfig click on boot
next inside boot click on advanced options
In boot advanced options click on maximum memory and increase the value
then click OK. Next click apply in msconfig and then restart your pc

Is the RAM installed correctly in my 'new' Mac Pro 1,1???

Hey folks, just picked up a used Mac Pro 1,1 2x2Ghz on ebay earlier this week to replace my 2Ghz dual core G5..
Im looking at adding some more RAM to the machine and am wondering if the person I bought this from even has the ram installed correctly.
When I opened it up, the 2x2GB sticks were both in the first two slots in the bottom memory tray. Luckily I had some RAM I planned on putting in it right when I got it out of the box (and then found out my 4GB of DDR2 SDRAM doesnt work with it hehehe), which required me to go look it up online before I even plugged the thing in, so I moved the tray with the RAM in it to the upper slot like the article I read said it was supposed to be..
Now I just read the Apple support doc that pops up when you click the Upgrade Memory link in the Memory tab in System Profiler and am confused even more..
Am I supposed to have both of those FB-DIMMs on the upper tray or do I need to move one of them to first slot of the lower tray??
Also, I noticed in the installation pictures, the top tray is pictured as being installed upside down, so the RAM in both trays is right above/below one another, but both of mine are right side up..
My Mac looks like everythings fine, system profiler shows me both DIMMs in tray A and isnt complaining... Gave Logic Pro a nice run the other night and havent really run into any problems or a KP yet.. Been reinstalling my recording software like crazy and no problems yet either..
Just wanted to make sure how its really supposed to be installed in case I could possibly end up frying something down the line..

See even the first two links posted have conflicting information.. According to OWC, I should have one 2GB stick on each riser, but that second link with the memory configuration pictures, the last config for the 4GB shows both 2GB sticks on riser A (thats actually the doc I was referring to earlier that I looked at when I first got the Mac) so I figured I was ok.. None of those options show one stick on each riser..
And again in regards to the way the riser is installed.. Apples own memory upgrade doc does indeed show the top riser installed upside down so the heat sinks are facing each other.. But every actual picture Ive seen, and OWC's own installation video shows them both installed right side up.. Now that I think about it after watching the OWC video, the riser cards are keyed, so I dont see how it would fit upside down in the first place..
I dont know I guess Ill just leave it like it is. I should be getting a pair of 2GB DIMMs hopefully in another week or so when money permits so Ill have both risers in use anyways..
Maybe mine is a later 2007 version of the 1,1 or something and there was a revision done??? Wish you could tell the actual date by serial number instead of just the timeframe the model was in existence hehehe.

I just had more ram installed in my 2009 mac mini and now there is no audio at all.

Hi all,
I have a late 2009 Mac Mini which I update to mavericks. This was not a great idea. The performance has been aweful since upgrading. I finally looked into adding RAM. I was told by the Genius at my local store to buy RAM on line and bring it back to the store for install. I had the Ram installed today and I am satisfied that things function much faster now.
The problem now is that the computer does not make any noise. I have speakers plugged into the headphone jack but no noise comes out. When the system boots up, there are no beeps or tones audible. The speakers were all working earlier today when I unplugged everything to take the mini to the store. I also plugged the speakers jack into my phone and they work. I was able to connect a bluetooth speaker and play music through it.
I have tried to reset the PRAM but I"m not sure if I was successful. The instructions I have read for PRAM reset say hold keys until second chime is heard. I heard no chimes at all.
I am a novice when it comes to computers but I am good at following detailed instructions.
Any help would be graetly appreciated!

Yes, this was an Apple retail location.
I made an appiontment thinking that they would sell and install the RAM. When I got there, the genius looked up the specs for my mini and said they did not sell what I needed. He explained that the mini was older and out-dated. He looked up the specs on what RAM i needed and suggested that I purchase it elsewhere and bring it back for them to install. He suggested that I purchase a new computer but I couldn't justify spending $600 or more. I am a very light user and would only be wasting money on a newer set up.
It was when I returned that I was informed (by a different tech) that Apple would not be responsible for any damage that might occur during the replacement.
I decided to proceed anyway thinking that an apple tech was less likely to do damage than I was.
After taking it in the back and swapping the chips, he brought it out, plugged it in and proceeded to open a bunch of Ram hogging apps, graphing software, and internet sites. I was happy to see that the performance was greatly improved and the spinning ball was not dominating the system.
After I hooked it back up at home and tried to play some music, I realized that there was no sound.

OK HERE IS WHERE I AM AT HARD DRIVE WENT DOWN UPGRADED TO A 250 GIG AND NOW NEED TO KNOW HOW TO INSTALL OSX ON THE POWERBOOK G4 17

I have a powerbook g4 17 and it recently went down the hard drive sounded like it was eating itself so i replaced the hard drive with a 250 gig and now i need help on how to get osx onto the powerbook it will not boot from disk i will start all the back at 0s9 if need be can anyone please help me i miss my g4

Do you have any OSX disks?
It won't boot from the new hard drive yet because there is no OS installed.
You need to use an OSX disk, put in your mac, then when turn on, hold down the C key (to boot from the CD).
Hold it down for a long time until you hear it noisily reading from the CD drive. Once OSX starts up (from CD) you should go to Disk utility and you will need to format your new hard drive.
Once formatted, you can then install OSX.
Everything is done from the OSX install disk.
If you don't have one, you can buy a retail copy from Apple (not Snow Leopard), or from Ebay. Make sure it is a retail copy, not disks that came with a Mac as they only work with the exact model of Mac it came with.

8GB of RAM Installed, only 4GB detected/used by BIOS/Windows 7 (with P67A-GD55)

Let me start off by saying that I'm not very good with computers. At all. I know a little bit about them, but I am by no means an expert. That said, I have 8GB of RAM installed on my motherboard, spread out across 4 sticks. However, upon looking at my BIOS and my Windows Resource Monitor, it declares that I only have 4GB of RAM installed and usable. This is what I know so far:
- This issue has been prevalent as long as I've had my computer, and by extension my motherboard and my RAM sticks, so this issue isn't recent.
- I do have a 64bit version of Windows 7. I've checked and double-checked, and I'm 99.5% positive that it is.
- Speccy, a 3rd party program designed for checking system specs, declares that I do, in fact, have 8GB installed.
- I don't think that the RAM is bad because the BIOS still does pick up on different statistics of the RAM that are in the slots; it just fails to register the actual fact that they're there.
System Specs:
OS: Windows 7 64bit SP1
CPU: Intel Core i5 2500K @ 3.30GHz
RAM: Patriot PSD32G133K 4x2GB DDR3 @ 498MHz
Motherboard: MSI P67A-GD55 P67 LGA 1155
HDD: 977GB SAMSUNG SAMSUNG HD103SJ ATA Device (SATA)
Optical Drive: LG DVDRAM GH24NS50 ATA Device
GPU: AMD Radeon HD 6870 1GB VRAM
PSU: Cooler Master 750 Watt
BIOS Version: E7681IMS V1.5
Now this is where it gets interesting: My motherboard has 4 DIMM slots for the RAM, and the motherboard (I assume by default) works in dual-channel mode. This means that DIMM 1 and 3 work together and so do DIMM 2 and 4, which most of you probably understand. However, filling up all 4 slots only gives me half the RAM. So I remove the RAM from slots 2 and 4, and it results in all 4GB of RAM being detected. Then, I add in each other RAM stick one at a time, and it fails to register both. So I remove the RAM from slots 1 and 3, and keep the RAM from slots 2 and 4, and it ends up in all 4GB being registered.
I feel like the answer should be directly in front of me, but from endless Google searches and posts on other forums, I have ended up at a dead end. I'm completely clueless, so I could really use some help.
Any and all help would be appreciated.
Also, if this is the wrong forum for this, feel free to move it wherever.

Quote from: Jack on 28-August-11, 01:11:56
What is your current UEFI/BIOS Version?
The usual cause of such problems is (apart from bad memory slots or a defect of the processor's memory controller) a contact problem between the boards CPU Socket contact pins and the CPU's contact pads. Broke or bent pins are one explanation, in other instances a heatsink that is fastened to tight can also cause such issues.
I'll have the BIOS version up in a moment, but I'll see about diagnosing if one of those problems might just be what is my problem. Any tips on doing that?
Also, BIOS version is up in the OP now.

What's the maximum memory ram for Macbook Pro?

Hello,
May I know what's the maximum memory ram capacity for Macbook Pro?
I am having Macbook Pro - 2.53GHz Intel Core 2 Duo
Thank you!
Alvin

Hate to resurrect a dead horse but....I was looking in the instructions for memory upgrades and the instructions specified that the computer will only recognize 3 gigs. Will that still be in effect if I upgrade to Snow Leopard when it becomes available? Or do I need to save my pennies for a Mac Pro? What I am getting at is: is the reason for the RAM cap due to software issues, 64 bit not being native, different version of leopard used on notebooks, or is it due to hardware issues.

Getting ram installed in store

i have to questions. can you upgrade from the 512 to the 1 gig in the store? or can you only do that online? i would like to get my computer from the store and i was wondering if they do that for you. i heard that they do from one post and they dont from another post.
one more question. if you buy the 1 gig instead of the 512, does it void the 14 day trial period? i heard mixed things about this as well and i just wanted to know before i go and buy my mbp

There is no such thing as Apple ram.
If you pay Apple $100 for ram, they will give you an Apple box with a ram stick from either Samsung, Hynix, Nanya or Micron (Crucial) inside.
You can buy 512mb for $50 e.g here
http://www.ewiz.com/detail.php?p=D2-6SO512S&c=fr&pid=6d1dbc6dba95dfe2affb9e5bcfd e44aa8e3764ea8d3be5c580c914acb2104e58
This is a ram chip that Apple supply and has a lifetime warranty, so you can pay Apple $100 or ewiz $51. -it's the EXACT same chip - if you shop around you can find it for as low as $40. If you find a Hynix, Micron(which is also Crucial) or Nanya chip you can install them also. Ironically when Apple sell you the ram the decrease the warranty to a year or as long as you have Apple Care.
You can also get a 1gb chip for as little as $120.
Install instructions above show how it takes 1-2 minutes to install. Ram is a user installable part and does not void any warranty. It's pretty unlikely you can damage anything installing ram - be careful unscrewing the slot.
So I would say get the machine as supplied and buy ram elsewhere. Post back if you want some advice where to look. Also Craigslist is quite good as someone locally may be selling their stock 512mb chip to upgrade to 2gb - I did.
Best of luck.
PS 3rd Party horror stories are in relation to other ram that is not commonly supplied as new by Apple - e.g. Corsaire.

MSI 870S-G46 8GB Ram Installed/Detected 4GB Usable W7U-x64

Hey folks,
So I have a rather iritating issue. I just upgraded to a MSI 870S-G46 and I have been having issues with my ram. I have 2 4GB DDR3 "1600mhz" sticks made by Kingston.
I AM running Windows 7 x64, infact I have done a clean install periodically through testing on my secondary drive. Same results. A pic just to make the point. (Alt+printscreen ftw!)
The bios has been updated to latest. Via usb. Set to optimum and poked with too. (Don't see any force remap switch... so I assume this board is supposed to always do remapping...)
I have tried both reseating(XD Been seated a good 4 times now in all for an identical result)...
AND another cpu(even reseated said other cpu once). No change.
Even tried with the stock heatsink that isn't as firm on as mine clamps down.
... And a fresh install several times throughout this process on aforementioned secondary drive.
Both ram sticks are good, have tried both individually in slot 1, and both combinations of slot 1 and 2. (This board has slot 1/2 and 3/4 paired with same color.)
@.@... ... ... Elp?

this recently happened to me, i updated my bios because i kept getting IRQL errors. the errors have stopped but now i have only 4gb usable from 8gb. (g.skill 1600 ram) slot 1 and slot 2.
when i put in slot 1 and slot 4 it read all 8gb but its very unstable. the IRQL happens 5 minutes in and boot takes a long time (other BSOD too). i tried lowering the speed but still no good.
im on bios version h.C0, updated thru live update.

I have 16Gb of RAM installed on my Pavilion dv6-4023TX . The Bios reports only 6Gb

I have 16Gb of RAM installed on my Pavilion dv6-4023TX . The Bios reports only 6Gb

Hi
Please go to HP Website and update the Bios on the unit and have it checked.
Let us know how it goes!
"I work for HP."
****Click the (purple thumbs up icon in the lower right corner of a post) to say thanks****
****Please mark Accept As Solution if it solves your problem****
Regards
Manjunath

Powermac G5 won't boot after new PSU replaced- says no ram installed!!!

I've recently inherited a friends old Powermac DP 2.0 G5 after it died a death. After some testing I diagnosed that that PSU had died in it- something that seems quite common.
Having found some detailed instructions online, I sourced a replacement PSU and set about replacing it. All went well with no major problems. I put everything back together and then powered the machine on. The fans whirled to life but there was no video out. I then noticed that the power light was flashing twice and then a break.
I checked on Apple's website and it was saying that 2 flashed is no ram installed. Yet there are 4 sticks installed - surely these all can't be dead? Has anyone got any words of advice? I'll be gutted if it's the logic board as the replacement PSU was really expensive....help!

Could be the RAM, sockets, Logic board, only way to tell is to swap them out.
Have you done a PRAM reset...
http://docs.info.apple.com/article.html?artnum=2238
How to reset the SMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005) ...
http://support.apple.com/kb/HT1436
Earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939

RAM install question-please help me!

OK-I'm so sorry if this has been constantly asked on this board already.......I'm about to search but wanted to post. I just bought a brand new PowerPC G5 dual 2.3 and have had so many problems I won't bore you with, seeing as almost all have been solved (some by exchanging for new hardware). The last issue I'm left with deals with installation of RAM. Before I turned the system on for the first time I installed an additional gig of RAM purchased directly from Apple with the comp, no bootleg chips. It came with 512M in the form of 2 256 boards, I installed 2 512M DDR2 EEC DIMMS in the correct slots (one above the top factory installed board and on below the lower factory board). They are correctly installed, and the clips are firmly secured. The problem is, when I look at the "About this Mac" menu, it only shows 512M of RAM. The "memory" window shows the slots as empty. Any and all help would be greatly appreciated, I just want to get going already!
Thank you who responds,
DCO

Hi DCO,
It's worth double-checking that the RAM is seated properly - I thought my RAM was iffy at first as it apppeared to be seated fully, but it turned out that my G5 requires near enough thumb-destroying (but not quite motherboard-destroying - be careful!) pressure to get the RAM to click in fully. I found that I had better luck seating one end then the other, rather than trying to push it down squarely.
Regards,
Michael

RAM Install thwarted by black ribbon

I have a 2008 IMac 8,1 running Snow Leopard. Recently purchased upgraded RAM from 1GB to 4GB to improve processing. Now have 2 correct 2GB cards. The right slot had the original 1GB card. Removed it and successfully installed new 2GB card. In the left slot the black ribbon used to pop out the card runs IN FRONT of the connections and is preventing the card from seating.
What do I have to do to correct this? Is this something I can do at home or does this have to go my local Apple Store? If so, this is obviously a manufacturing issue but the unit is out of warranty. Will this cost a bundle? Hoping not. Thanks.

After some advice from my local Apple store I see now what the problem is.
The black ribbon pulls a "carriage" of sorts out of the memory bay. One end of the ribbon tab protrudes out of the bay for you to grab. The other end loops around the interior side of the carriage then folds back so that it lays flat against itself. These two pieces are stuck together with glue so the ribbon remains beneath the memory card at all times.
In my case, the top part of the ribbon became separated from the lower part because it came "unglued" allowing the top portion to pop into an upright position that blocked access to the "seat" of the card bay. The inside edge of the memory card was pressing against the ribbon, not the seat itself. I corrected this by using a tiny screwdriver to carefully fold the ribbon back down and press the ribbon to itself using the remaining adhesive. It worked.
RAM installed and running well.

Maximum of RAM installed on HP 250 G1 and Elitebook 8470p PER SLOT.

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