Laptop freezes after installing new ram card.

Hi,
i recently upgraded my ram card on my toshiba c650d laptop. after installing the ram card the laptop began to freeze while in the desktop and then it could be resumed when Alt+Ctrl+Del was pressed.
and the laptop wouldn't wake from the sleep mode....
please help me this is urgent...as for im leaving my home country for studies.
thanks for the help in advance
Malith Ratnayake.

Hello Malith Ratnayake,
After changing the old RAM by the new one, this issue occurs?
If the issue doesn’t occur when you change back to use old ram, I think it is the RAM hardware issue.
Please contact the hardware manufacturer for better support.
Best regards,
Fangzhou CHEN
Fangzhou CHEN
TechNet Community Support

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Mac crashes regularly after installing new RAM

My laptop crashes at least once a day ever since installing new RAM. It seems to be triggered by quitting programs, usually Firefox, Logic or Spotify. There was nothing else connected to the Mac that brought about the latest crash but I do use an Mbox 2 on a regular basis.
Below is the last crash report and also the RAM profile. It's Kingston brand if that means anything.
*_Crash Report:_*
Interval Since Last Panic Report: 55868 sec
Panics Since Last Report: 1
Anonymous UUID: AEEF5666-4C4E-4FC1-AC7A-5A500F952BF9
Sat Jan 22 00:00:25 2011
panic(cpu 1 caller 0x2aab55): Kernel trap at 0x8b042474, type 14=page fault, registers:
CR0: 0x8001003b, CR2: 0x8b042474, CR3: 0x00100000, CR4: 0x00000660
EAX: 0x09947100, EBX: 0x09ad4a00, ECX: 0xe15f0000, EDX: 0x0a133800
CR2: 0x8b042474, EBP: 0x5294bb68, ESI: 0x08bd7f40, EDI: 0x0085f838
EFL: 0x00010246, EIP: 0x8b042474, CS: 0x00000008, DS: 0x03450010
Error code: 0x00000010
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x5294b968 : 0x21b50c (0x5d42fc 0x5294b99c 0x223974 0x0)
0x5294b9b8 : 0x2aab55 (0x59616c 0x8b042474 0xe 0x596336)
0x5294ba98 : 0x2a09a8 (0x5294bab0 0x246 0x5294bb68 0x8b042474)
0x5294baa8 : 0x8b042474 (0xe 0x48 0x52940010 0x230010)
0x5294bb68 : 0x1854f8f (0x9ad4a00 0x0 0x5294bbf8 0x60)
0x5294bb88 : 0x4ff5ae (0x9ad4b00 0x85f838 0x1 0x0)
0x5294bba8 : 0x50f6e0 (0x9ad4b00 0x85f838 0x5294bbd8 0x4ff931)
0x5294bbd8 : 0x50f854 (0x8bd7f40 0x0 0x1 0x0)
0x5294bbf8 : 0x4ff5ae (0x8bd7f40 0x0 0x1 0x1)
0x5294bc18 : 0x4ff5c9 (0x8bd7f40 0x0 0x5294bc48 0x4ff5ae)
0x5294bc38 : 0x531e12 (0x8bd7f40 0xffff 0x8bd4f84 0x4ff5c9)
0x5294bc58 : 0x531e45 (0x8bd4f80 0x246 0x5294bc98 0xb18e540)
0x5294bc78 : 0x4ff5ae (0x8bd4f80 0x0 0x1 0x1e)
0x5294bc98 : 0x4ff5c9 (0x8bd4f80 0x0 0x5294bce8 0x0)
0x5294bcb8 : 0x2844eb (0x8bd4f80 0xb18e540 0x1e 0x5294bce8)
0x5294bd08 : 0x21d8d1 (0xa088398 0xb2555a0 0x997aa24 0x1)
0x5294bd48 : 0x210a3a (0xa088300 0x12 0x5294bda8 0x20f45c)
0x5294bda8 : 0x21dda0 (0xa088300 0x10000 0x0 0x2107c2)
0x5294bdd8 : 0x23f567 (0x5294bdfc 0x24 0xa4289e4 0x0)
0x5294be28 : 0x214f6f (0xb18e540 0x1 0x1 0x221bb4)
0x5294be78 : 0x215581 (0x7fc7420 0x33303 0x43dfe330 0x8f1e1f4)
0x5294beb8 : 0x22c521 (0x7fc7420 0xc971640 0x5294bf08 0x47a0f3)
0x5294bf08 : 0x47ab28 (0x8f1e1f4 0x0 0x0 0x2ea2)
0x5294bf58 : 0x47ab56 (0x8f20000 0x0 0xc971684 0x0)
0x5294bf78 : 0x4f0f7d (0x8f20000 0xc971640 0xc971684 0x0)
0x5294bfc8 : 0x2a0ef8 (0xa1916c0 0x1 0x10 0xa194964)
Kernel Extensions in backtrace (with dependencies):
com.digidesign.mbox2.driver(8.0.0f1)@0x184e000->0x1871fff
dependency: com.apple.iokit.IOAudioFamily(1.7.9fc4)@0x90c000
dependency: com.apple.iokit.IOUSBFamily(4.1.7)@0x1232000
dependency: com.apple.driver.AppleUSBMergeNub(4.1.5)@0x1292000
dependency: com.apple.kext.OSvKernDSPLib(1.3)@0x908000
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x948000
dependency: com.apple.driver.AppleUSBComposite(3.9.0)@0x1266000
BSD process name corresponding to current thread: Spotify
Mac OS version:
10H574
Kernel version:
Darwin Kernel Version 10.5.0: Fri Nov 5 23:20:39 PDT 2010; root:xnu-1504.9.17~1/RELEASE_I386
System model name: MacBook7,1 (Mac-F22C89C8)
System uptime in nanoseconds: 10016535514139
unloaded kexts:
com.apple.driver.AppleMCP89RootPortPM 1.11 (addr 0x11cd000, size 0x20480) - last unloaded 250987080117
loaded kexts:
com.digidesign.mbox2.driver 8.0.0f1 - last loaded 49888220612
com.rogueamoeba.hermes 2.0.2
com.paceap.kext.pacesupport.snowleopard 5.7.2
com.Cycling74.driver.Soundflower 1.5.1
tc.tctechnologies.driver.PaeFireStudio 8028
com.digidesign.iokit.DigiIO 8.0.0f1
com.digidesign.iokit.DigiDal 8.0.0f1
com.apple.driver.AppleHWSensor 1.9.3d0
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AGPM 100.12.19
com.apple.driver.AppleMikeyHIDDriver 1.2.0
com.apple.driver.AppleMikeyDriver 1.9.9f12
com.apple.driver.AudioAUUC 1.13
com.apple.driver.AppleUpstreamUserClient 3.4.5
com.apple.driver.AppleMCCSControl 1.0.17
com.apple.driver.SMCMotionSensor 3.0.0d4
com.apple.driver.AppleHDA 1.9.9f12
com.apple.DontSteal_Mac_OSX 7.0.0
com.apple.driver.AudioIPCDriver 1.1.6
com.apple.driver.AppleIntelPenrynProfile 17
com.apple.driver.ACPISMCPlatformPlugin 4.5.0d5
com.apple.driver.AppleLPC 1.4.12
com.apple.driver.AppleBacklight 170.0.34
com.apple.GeForce 6.2.4
com.apple.driver.AppleUSBTCButtons 200.3.2
com.apple.driver.AppleUSBTCKeyboard 200.3.2
com.apple.iokit.SCSITaskUserClient 2.6.5
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.iokit.IOAHCIBlockStorage 1.6.3
com.apple.driver.AppleHPET 1.5
com.apple.driver.AirPortBrcm43224 426.36.1
com.apple.driver.AppleAHCIPort 2.1.5
com.apple.driver.AppleUSBHub 4.1.7
com.apple.nvenet 2.0.15
com.apple.driver.AppleUSBEHCI 4.1.7
com.apple.driver.AppleUSBOHCI 4.1.5
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.driver.AppleEFINVRAM 1.4.0
com.apple.driver.AppleRTC 1.3.1
com.apple.driver.AppleACPIButtons 1.3.5
com.apple.driver.AppleSMBIOS 1.6
com.apple.driver.AppleACPIEC 1.3.5
com.apple.driver.AppleAPIC 1.4
com.apple.driver.AppleIntelCPUPowerManagementClient 105.13.0
com.apple.security.sandbox 1
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.11
com.apple.driver.AppleIntelCPUPowerManagement 105.13.0
com.apple.driver.AppleProfileReadCounterAction 17
com.apple.driver.AppleProfileTimestampAction 10
com.apple.driver.AppleProfileThreadInfoAction 14
com.apple.driver.AppleProfileRegisterStateAction 10
com.apple.driver.AppleProfileKEventAction 10
com.apple.driver.AppleProfileCallstackAction 20
com.apple.driver.AppleSMBusController 1.0.8d0
com.apple.driver.DspFuncLib 1.9.9f12
com.apple.iokit.IOFireWireFamily 4.2.6
com.apple.iokit.IOSurface 74.2
com.apple.iokit.IOBluetoothSerialManager 2.3.8f7
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.iokit.IOAudioFamily 1.7.9fc4
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleHDAController 1.9.9f12
com.apple.iokit.IOHDAFamily 1.9.9f12
com.apple.driver.AppleSMBusPCI 1.0.8d0
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.AppleSMC 3.1.0d3
com.apple.driver.IOPlatformPluginFamily 4.5.0d5
com.apple.nvidia.nv50hal 6.2.4
com.apple.NVDAResman 6.2.4
com.apple.iokit.IONDRVSupport 2.2
com.apple.iokit.IOGraphicsFamily 2.2
com.apple.driver.BroadcomUSBBluetoothHCIController 2.3.8f7
com.apple.driver.AppleUSBBluetoothHCIController 2.3.8f7
com.apple.iokit.IOBluetoothFamily 2.3.8f7
com.apple.driver.AppleUSBMultitouch 206.6
com.apple.iokit.IOUSBHIDDriver 4.1.5
com.apple.driver.AppleUSBMergeNub 4.1.5
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.5
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IOAHCISerialATAPI 1.2.5
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.5
com.apple.iokit.IO80211Family 312
com.apple.iokit.IOAHCIFamily 2.0.4
com.apple.iokit.IOUSBUserClient 4.1.5
com.apple.iokit.IONetworkingFamily 1.10
com.apple.driver.NVSMU 2.2.7
com.apple.iokit.IOUSBFamily 4.1.7
com.apple.driver.AppleEFIRuntime 1.4.0
com.apple.iokit.IOHIDFamily 1.6.5
com.apple.iokit.IOSMBusFamily 1.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 6
com.apple.driver.DiskImages 289
com.apple.iokit.IOStorageFamily 1.6.2
com.apple.driver.AppleACPIPlatform 1.3.5
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily 1.3.0
Model: MacBook7,1, BootROM MB71.0039.B0B, 2 processors, Intel Core 2 Duo, 2.4 GHz, 4 GB, SMC 1.60f5
Graphics: NVIDIA GeForce 320M, NVIDIA GeForce 320M, PCI, 256 MB
Memory Module: global_name
AirPort: spairportwireless_card_type_airportextreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.10.131.36.1)
Bluetooth: Version 2.3.8f7, 2 service, 12 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: TOSHIBA MK2555GSXF, 232.89 GB
Serial ATA Device: MATSHITADVD-R UJ-898
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06600000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8218, 0x06630000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0237, 0x06300000
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0x24600000
*_Memory Profile_*
Memory Slots:
ECC: Disabled
BANK 0/DIMM0:
Size: 2 GB
Type: DDR3
Speed: 1067 MHz
Status: OK
Manufacturer: 0x0000
Part Number: 0x000000000000000000000000000000000000
Serial Number: 0x00000000
BANK 1/DIMM0:
Size: 2 GB
Type: DDR3
Speed: 1067 MHz
Status: OK
Manufacturer: 0x0000
Part Number: 0x000000000000000000000000000000000000
Serial Number: 0x00000000

It's almost impossible to trace back the panic report to a specific cause, but it's highly suspicious that you started experiencing problems after installing new RAM.
It's also strange that your RAM has no stated VendorID, Part Number or Serial Number.
I would return this memory poste haste.
Alternatively, if the DIMMs are from Kingston's ValueRAM range, just dump them in the garbage because that's where they belong. While you're there, look for any other RAM that someone else has thrown away - chances are its ValueRAM, too (hint: I have never seen a single ValueRAM DIMM work in any of my systems, so I avoid them like the plague - shame, since Kingston used to have such a good reputation).

No Signal after installing new graphics card

Hello and thanks in advance for your help!
We have a 2yr old HP p6540y. It has an ATI integrated Video Card. When we recently turned it on, we got a 'no signal' message on the monitor and then it would go to sleep. We have tried several things to fix...listed below, in order, and are still getting the same message. Please advise!
1) No Signal: DVI, VGA, HDMI. So we unplugged and restarted, no change.
2) Checked monitor and DVI & VGA cords with another computer: They all work.
3) Installed new Graphics Card: NVIDIA GEForce GT 610. Still got same 'no signal' message.
4) We plugged/unplugged all other cards/cords/anything we could and cleaned out. Then, finally, the monitor turned on! But not for long....
5) After restarting computer after installation of graphics card driver, we got the 'no signal' message again. We once again, pulled out other cards/plugs and again the monitor/computer came to life.
6) We unistalled the integrated ATI graphic card. When we go to Display, Advanced Options, it lists our new NVIDIA as graphic/display card.
7) We turned computer off overnight and this morning when we turned on, we once agin got the 'no signal' message. We unplugged/plugged computer in several times. Also tried the trick with pulling out cards/plugs and we got nothing. No Signal. After doing this several times (about 10), it finally worked again.
8) We changed sleep settings to: Screensaver=Never; Sleep Mode=Never.
9) We restarted again to once again get no signal message.
So...what do we need to do?
Thanks so much!
This question was solved.
View Solution.

Triusa, welcome to the forum.
I suspect that your problem is caused by the power supply unit (PSU). Here is a guide to help you troubleshoot the problem:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06788&lc=en&dlc=en&cc=us&product=502610&rule=...
Also, the existing PSU is 250W. The GT 610 requires a minimum of 300W.
Please click "Accept as Solution" if your problem is solved.
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4 hrs later - Computer shut down after installing new RAM (mid 2007 Imac)

Mid 2007 imac and I installed new Ram. It worked for 4 hrs then the Imac shutdown. The pressed power button but no power. Unplugged and replugged the power cord and 3 beeps sounded. I am wondering if it worked for 4 hrs or so, then why did it would it fail 4 hrs later?
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or maybe the back tray wasn't tight enough?
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Hi,
Did you try the latest Realtek audio driver?
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So I have a 15" macbook pro (2.4Ghz) that I've had for a few months. It's been pretty good so far, but I've been using it for Ram-intensive programs such as Adobe Photoshop and Illustrator, as well as Logic. I only had the 2GB of Ram that it came with, and I was noticing some latency. So I did what everyone recommended and upgraded the Ram to 4GB. I purchased some at my local computer shop (s598: Super Talent 4GB SODIMM DDR3 1066Mhz) I just posted the exact numbers posted on the packaging for this item. I know I need DDR3 1066Mhz, but I'm not sure what the S598 stands for.......
Anyhow, I just installed this today. And it seems that the system doesn't get bogged down AS much. But my laptop has COMPLETELY frozen up twice within a couple hours and I've had to force shutdown the machine... Is this the RAM causing this?? Would anyone know if installing this Ram can be problematic? Any help would be appreciated. Thanks!

All of the new unibody MBs/MBPs can use (6GB 4X2GB)
But yes you should definitely make sure the RAM is seated correctly and you didn't touch the gold part of the RAM during installation. Though if something was seriously wrong it would have made loud obnoxious sounds while you tried to start up.
Aside from Installation issues, you should reset the PRAM as noted previously. Hold down command-option-p-r at startup until it chimes twice.
OP, looking at Super Talent's website they don't even have 1066MHz chips listed in their DDR3 chips. All I see is a jump from 800MHz (DDR2) to 1333MHz (DDR3).
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Message Edited by Lazlo420 on 06-27-2009 12:05 PM
Note from Moderator: Gave it a more descriptive subject.
Message Edited by JaneL on 06-28-2009 01:36 PM

I find this thread very interesting. I am assuming this system (3000 j115 A11) is the same as one I mentioned in a post from June 12 (7387A11... Graphics upgradeable?).... and is still hanging out there. Perhaps if Lenovo, or anybody else for that matter, could/would provide SPECIFIC upgrade instructions we could all be enlightened. (In my case I do not own a Lenovo computer but I am hoping to help my sister-in-law with her Lenovo and don't look forward to a major meltdown if the systems are not capable of this, otherwise, simple upgrade.)
Niether of the 2 previous posters mentioned if they upgraded the PS in thier respective systems prior to the graphics card installation (although ala17 "recently" did.). One had issues and the other didn't. If that should be the first step toward the upgrade, it would be helpful to know beforehand.
Thanks and good luck. Post back if you get to the bottom of it.

Won't boot after installing new video card

Hello, I have a H8-1284 desktop computer, and a few days ago the video card went. So i bought a Geforce GTX 650 video card, and after installing the card and starting the comp, it just hangs at the HP logo splash screen. So I put an older geforce 8800, and it boots no problem. When I try the new Geforce GTX 650 card, same thing, just hangs at splash screen. I checked the bios and there doent seem to be anything there that wouild help. My power supply is 460 w, and the new card only needs 400 w, any and all help will be greatly appreciated
This question was solved.
View Solution.

Hi,
Most PCI-E 3.0 cards are backwards compatible with PCI-E 2.0 slots. However, in order to get PCI-E version 3 you need to be using an Ivy Bridge processor. Review these specifications for a typical NVIDIA GTX 650.
HP DV9700, t9300, Nvidia 8600, 4GB, Crucial C300 128GB SSD
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HP Touchpad, HP Chromebook 11
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Custom i7-4790k,Z-97, 16GB, Vertex 3 SSD, Plextor M.2 SSD, Samsung EVO SSD, Corsair HX650, GTX 660TI
Windows 7/8 UEFI/Legacy mode, MBR/GPT

MacBook won't even turn on after installing new ram

I am using the 2010 MacBook (white 13 inch) I bought ram (two 2gb modules) and was going to install it. I removed my Original ram, but accidentally powered it on it the process (no ram was inside). I got a longed beep. I held the power button and shut it off. I then put the ram back in and it won't turn on. I don't hear any parts moving, no power, nothing. Yes I put the ram in right, an it's tight as can be. Its pushed in well. Help! I never put the new ram in!

The new ram doesn't fit. The laptop won't turn on with old ram. It worked before I removed it now it doesn't. It's I'm there tight so don't tell me to put it in with pressure because I did

Startup problems after instaling new graphics card drivers

PC: HP p6520 f with a 400 watt power supply
video card: AMD Radeon 6570 (MD1GD3)
After getting the 400 watt power supply, I was able to uninstall the intergrated graphics card's drivers, but I can't succsesfully startup after installing drivers for the new card without a system restore, which of course gets rid of the new drivers.
I've tried newer drivers, but those don't work either.
Any suggestions?

Hello Sev_07. I understand you're unable to install your video card drivers.
Are you receiving an error on boot?
Are you experiencing any issues with other pieces of hardware?
Have you tried running HP Support Assistant and Windows Update to ensure all of the software and drivers are completely up to date?
It may also be helpful for you to provide your product number so I can look at your computer's specifications. This document can show you where this is located.
I hope you have a great day!
Please click the white star under my name to give me Kudos as a way to say "Thanks!"
Click the "Accept as Solution" button if I resolve your issue.

Problem after installing new ram

Just installed 1 MB of new ram. Everything appears to work with one very annoying problem that never existed prior to installation of ram. The problem is that the window moves slightly with any movement of the mouse. Not a great deal but enough to hide the menu at top of screen. I ran an Apple Hardware Test and all hardware passed. I changed the mouse but no cure. This happens with nothing running so I assume it is not software. It doesn't appear to affect the operation but it tends to make one sea sick with the up and down and side to side motion anytime the mouse is moved.
Shure would appreciate any help with this.
Doug

Open the Universal Access pane of System Preferences and turn off the Zoom option in the Seeing tab.
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Power supply: http://www.coolermaster-usa.com/product.php?product_id=3082
Video card: http://www.gigabyte.com/products/product-page.aspx?pid=4359#ov
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I understand a new video card isn't working as expected.
What is the product number and model of the PC? The following document details how to find this information should you need it.
http://h10025.www1.hp.com/ewfrf/wc/document?tmp_renderType=findModel&cc=us&dlc=en&docname=c00033108&...
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[VIA] KT4AV seemingly dead after installing new sound card!

Hi all,
I recently fitted a new sound card to my system. following this my system wouldn't start - it wouldn't even get past POST (i'm getting the 4 red LEDs on the D-Bracket for "cpu incorrectly installed or damaged"). I've takenb the card out again, and no change. i've removed and reseated the CPU, and no change. I've even changed the CPU for another that i know is working fine, and (you guessed it) no change. I've also tried resetting/clearing the CMOS (nothing).
The main thing i should stress is that my system was 100% fine before this. never locked, rebooted or crashed.
My system is:
KT4AV mobo
Athlon XP 2800+ (and also a Duron 900 for testing, as above)
2 x Crucial DDR2700 512MB sticks
Radeon 9800 Pro (Saphire)
Q-Tec (yes - i know!) 550W PSU
Could the CPU socket have been damaged/burnt out or something?
Hope someone can help, cheers
Jon...

the first thing i will suggest is.... try another (better) PSU. borrow one off a friend. you may find that the board powers up again

Computer freezes after installing new updates

I installed new updates and went to restart the computer, the apple logo came on and the progress bar went a third across then locked up with the curser spinning. Each time I try to restart the same thing happens. I can only restart in safe mode, can anyone help me with this problem.

Try these in order testing your system after each to see if it's back to normal:
1. a. Resetting your Mac's PRAM and NVRAM
    b. Intel-based Macs: Resetting the System Management Controller (SMC)
2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the Utilities menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
4. Reinstall Yosemite: Reboot from the Recovery HD. Select Reinstall OS X from the Utilities menu, and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.
5. Reinstall Yosemite from Scratch:
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
How to Clean Install OS X Yosemite
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.

After installing new RAM module macbook will not wake without re-start

Im having a little problem with my macbook. It operates normally and the new RAM appears to function as normal except when the computer is in sleep mode, it appears to sleep as normal but when the lid is raised or the power button depressed to wake the system up it will not do so without a full re-start. Any help is much appreciated. I have tried re-setting the PRAM and performing the usual maintenance functions from OnyX.
Thank you.

Did replacing the RAM fix the problem? I am also experiencing the same issue. The RAM works great when the computer is running but occasionally I cannot get the computer out of sleep mode and must reset the entire machine. Is the only cause of this a bad stick of RAM?

Laptop freezes after installing new ram card.

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