06-11-2016 09:44 AM
Hello i have Lenovo Thinkcentre M90P whith Intel Pentium G6950 250GB HD and 2GB of 1066mhz DDR3 RAM i think its Hynix? Recently i bought a 4GB Crucial DDR3 stick 1600mhz .
I took out the old RAM and put in this new one but the PC doesnt get into windows anymore and just keep rebooting if I install the old RAM back everything works perfect.
I tought that MHZ shouldnt be a problem and that the new ram will be downgraded to 1333mhz (max supported i think).
Maybe any BIOS update would work or what should i do?
Thanks for help!
06-11-2016 10:48 AM - edited 06-11-2016 10:54 AM
For maximum system performance, you want to keep maximum memory utilization under 70% Use Windows 'Task Manager' to view your memory utilization along the bottom line. (Further performance to be had with 'dual-channel' mode -- identical spec modules installed in pairs.)
If you don't wish to buy memory from Lenovo, both Kingston and Crucial have 'System Specific' memory for your system that is OEM equivalent and guaranteed compatible. Memory timings must match what the BIOS expects for the system to recognize it, generic memory often doesn't work.
Use your system's Hardware Maintenance Manual for instructions on how to upgrade the memory. After making any memory change, run 2 passes of MemTest86 to ensure all is well.
I think you'll find that when you input your system information into the Crucial memory advisor , it will give you part numbers that are different from what you installed.
06-11-2016 11:24 AM
The only difference is that my is 1,5V i think , that is the problem?
06-11-2016 11:38 AM
When I clicked on 'View more compatible memory', it shows both 1.35 and 1.5 memory. It's probably a timing issue.
06-11-2016 04:30 PM
Before any hardware upgrade, it's advisable to update the BIOS to ensure you have maximum hardware support and fixes.
06-11-2016 07:57 PM
Many times the system accommodate the old memories, and putting on different memories, the sistemalas rejects as if they were incompatible, in your case be compatible memory reinstalling the operating system, should be resolved, I leave the technical characteristics:
Compatibility: 100% Guaranteed Certified & Compatible with your Lenovo ThinkCentre and All Operating Systems
Speed: 1333MHz (PC3-10600)
Technology: DDR3 SDRAM
Pins: 240-pin, Gold Connectors
Form Factor: DIMM (Dual Inline Memory Module)
Module Dimensions: 133.35mm x 30mm (LxH)
Data Integrity: Non-ECC
Ranking: 1R, 2R, 4R
Voltage: 1.35V - 1.5V
CAS Latency: You will receive memory with the correct CAS Latency for your model
06-12-2016 08:10 AM - edited 06-12-2016 08:13 AM
Before we rule out incompatibility, let's run through a few basic checks to see if the memory is recognized with your system.
Can you verify that the new memory is displayed in your BIOS setup and that all of it is recognized?
If it is recognized, can you boot to another drive or Windows USB installation media? This will rule out the OS itself (and I highly doubt it's the OS).
Can you boot the system with only one of the new memory modules installed? Be sure to install it in the DIMM1 slot per the installation graphic on your access panel. Edit: I see you only have one new module. In this case, please verify that it's installed in the correct slot.
Let us know how this goes. If the memory still isn't recognized then it's truly incompatible. No amount of OS reinstallation will correct that.
06-12-2016 12:46 PM
Now after BIOS update Memory is normaly recognized in BIOS , all 4GB downcloced to 1066mhz ,looks fine to me.
Now the problem is when it start booting windows (logo shows and that white circle for loading ) it just shut down and restart but keeps shuting down over and over again , if i put old RAM back it works perfectly.
So maybe the windows reinstall would work?
06-12-2016 12:50 PM - edited 06-12-2016 12:57 PM
Are you able to burn a CD with MemTest86 and run it ? Are you able to get 2 passes with no errors ?