Lost video card after expanding RAM?

Question

laptops

There is a laptop Lenovo ThinkPad Edge 14 (NVP3WRT), on board which has 2 gigabytes of RAM (Hynix DDR3 PC-8500). Due to the lack of memory, I decided to buy another bar (Samsung DDR3 PC-10600). I came home, put it on, turn on the computer - the resolution is 640x480. A little later, it turned out that the video card (Mobility Radeon HD 5145) simply disappeared from the hardware manager - there is no “Video adapters” section at all, the HDMI sound output also disappeared. Windows writes: "Memory: 4.00 GB (Available 3.86 GB)" (axis - 7 HP x64)
In general, it was found out by experience that any plank alone works fine. If I insert both (I also tried to swap places) - there is no vidyahi when loading. The only clue is the "diversity" of memory. I go to the store, I find a sales assistant with whom I consulted about memory and from whom I bought a Samsung bar, no problem - he brings me another bar (Kingston DDR3 PC-8500) in order to test the bars of the same frequency. I insert it right in the store - the same thing: one by one - everyone works, in any pairwise combinations - no (or rather, they work, but they hide the video).
Tomorrow I'll take the computer to the service center, but first I would like to know if someone has come across such a problem, because I'm afraid that the computer will be taken away for experiments, and I would not want to part with it. I have two options left - a software jamb in the BIOS, or a hardware one in the motherboard / chipset.

Answer 1

Can you try to boot from a Live CD of some kind of Ubuntu? Then it will be possible to determine the software cant or not. Have you tried 2 new bars at the same time?

Answer 2

I didn’t buy the second new one (Kingston), but took it to test in the store (because both the laptop and the memory were bought from them, and both are under warranty). And yes, they tried at the same time - the same garbage, I wrote about it above. I thought about the Live CD, yesterday there was neither a disk nor the Internet at hand when I was picking it all up, I'll try it today.

Answer 3

Maybe the laptop does not support dual-channel memory mode?

Answer 4

Is there no second built-in Intel vidyahi in the laptop? Maybe with the advent of extra RAM, the laptop switches to the built-in video, but it is not in the device manager, because. no firewood supplied?

Answer 5

There is a video card (Core i3), however, you cannot switch between built-in and discrete - Radeon is forced. As for the fact that this laptop does not support two-channel, I doubt it very much (although it is a budget one, it’s still a finkpad), especially since there are more powerful variations with 4 GB of memory on board (and, in my opinion, more than one bar).
to lead from the fronts (tried to boot from a Linux live):
the first live was Ubuntu 10.10, which is first loaded into memory, and then asks whether to run the installation or run the operating system in live mode. The first time it loaded up to the selection screen, I pressed “Try Ubuntu”, on which my communication with the system ended - the cursor runs, the buttons are pressed, but the reaction is zero. After the reboot, I did not even see this selection screen - only the Ubuntu background.
the second live is the old Xubuntu 8.04, which first asks what to do (install or live), and then loads. I chose live, it plunged for a while, after which it knocked it out in the console with the following message: continue to load, of course, flatly refused
udevd-event [1614]: run_program: '/sbin/modprobe' abormal exit


Answer 6

By the way, check the Windows kernel. those. what is worth. You need a kernel with PAE+ support for that PAE itself to be enabled. If there is no PAE or it is disabled, then a 32-bit OS will see a current of 4 gigabytes of memory. And since for DMA, the video card memory is mapped to virtual memory, it turns out that it has nowhere to map. All 4 gigabytes of memory are already occupied by the RAM. those. the kernel NTKRNLPA.EXE or
NTKRPAMP.EXE must be loaded at system startup. In the properties of my computer, look, it should glow there, whether PAE is enabled or not

Answer 7

The laptop was accepted at the service center along with the purchased memory bar. In advance, I’m interested in a question for legally savvy Habravchans (in case a decision is made to return money for a laptop): memory and laptop were bought with a difference of six months, as independent purchases, can I demand at the same time a refund for the memory? (based on what I bought for use with this particular laptop, and since I no longer have a laptop, then the need for a memory bar has disappeared). I will clarify that both the laptop and the memory were bought in the same store.