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Problems booting with new Crucial 16GB RAM in IdeaPad 720S-14IKB (Type 81DB)

Q: Problems booting with new Crucial 16GB RAM in IdeaPad 720S-14IKB (Type 81DB)

I purchased a Crucial 16GB DDR4 2400 SODIMM 1.2V CL17 RAM chip to upgrade my Lenovo IdeaPad 720S-14IKB which had an 8GB RAM chip. I did check the Crucial website beforehand that the CT16G4SFD824A chip would work, and indeed it said that it should. However, it does not work very well. To get the laptop to boot beyond BIOS post (and actually boot Windows), I have to first power it on, then hold the power button for 4 seconds to force shut it down and the hit the exact time to start it again (around 1 second after the power light goes off) to get it to boot. If I do not use this procedure, the screen will not turn on and the Lenovo logo will never show. I think this is related to the BIOS training the memory chip or something like this, and the process described above circumvents this process. This is the only "semi-reliable" way I have found to boot the machine with this RAM. I have ran tests on the memory while in Windows, and everything seems to work as normal. I believe the problem might be some incompatibility with Lenovo BIOS and this RAM chip but I am unsure of how to proceed from here. Does anyone have any tips for me, while I know how to get the machine to boot, it is very cumbersome and sometimes results in the need for Windows to "repair" itself which is not exactly great.

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RELEVANCY SCORE 200
Preferred Solution: Problems booting with new Crucial 16GB RAM in IdeaPad 720S-14IKB (Type 81DB)

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

RELEVANCY SCORE 118.4

Hi, I have a question. Is it possible to charge 720s-14IKB via USB Type-C? If so, with what kind of charger. Could it be charger like for a phone? Best greetings

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RELEVANCY SCORE 114.8

My fingerprint device is not working. I have scanned the forums and found a few solutions such as updating BIOS, chipset drivers, even using newer synaptics wbdi drivers for other pcs. After updating bios, fingerprint worked once but now it stopped working again. And none of the other solutions have worked at all.In the settings it says win hello can't be used in this pc - which is untrue. In the device manager i have the little triangle warning sign on my synaptics wbdi and device status is "cannot be started (code 10)".Real solutions are welcome. Thanks.

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RELEVANCY SCORE 113.6

Aside from the well documented fan noise problem I am also having a problem with the battery. If I shut the laptop down and come back to it after 24 hours the battery has drained to 65% from 100%. Is anyone having any the same problem and can anyone help? Thanks Matt

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RELEVANCY SCORE 94

Hello,I have a Ideapad 720s 14-IKB and my webcam is not working. I have this issue either on applications like skype but also on the internal camera application. Even after checking the status on the device manager as well as reinstalling the newest driver for the webcam this issue isn't solved. I have tried to deactivate and then activate the camer again but still it only shows me a picture of a crossed out camera.I would highly appreciate any help. Kind regards,Karim

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RELEVANCY SCORE 94

Hi! I bought the Ideapad 720S-14IKB about two weeks ago, and I am really really happy about it. The only thing that is bothering me, is that the fans on this machine cycle a lot. Like, for a while they make basically no noise, until they suddenly ramp up to the max for a short period before they go back to being practically silent. They're not even that loud in general, it's just that they are pulsating a lot, and that makes the noise so much more noticeable. I really would like to see a BIOS update or driver update or something that makes the fan cycling a bit smoother. Is there any chance of this actually happening in the near future?

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RELEVANCY SCORE 92.8

I'm planning to buy this laptop: http://www3.lenovo.com/us/en/laptops/ideapad/ideapad-700-series/Lenovo-IdeaPad-720S-14IKB/p/80XC0047... But the Wireless on this laptop is 1x1. I wanted to know if I could replace that card with a faster Intel 8265 card. 

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RELEVANCY SCORE 92.8

Hey I've got a question about the keyboard in my Lenovo,The keyboard's FN button isn't working and furthermore the button ALT is taking the funcionality of the FN key.Examples:1. FN + any F key = does not work2. ALT + any F key = does the funcionality of the FN buttonSo the FN is switched with the ALT partly because the FN does not work at all!Any help ?NOTE, laptop was bought yesterday

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RELEVANCY SCORE 92.8

Machine: Ideapad 720S-14IKB Type 81BD The Problem: Randomly (and frequently) the touchpad completely stops functioning. This issue persists even through restarts. After 30-60 minutes it just as unexpectedly starts working again. While it's not working it is 100% non-functional: no mouse shows up on screen, clicking does nothing, swiping does nothing, gestures do nothing. While it is working it is 100% functional: everything works as expected. Things I've already tried:- The 'disable trackpad' function key (trackpad doesn't work in either mode)- Restarting (issue persists through restart)- Updating software (I got latest Windows 10)- Updating firmware (I got latest firmware through Lenovo System Update) Something I noticed while looking for solutions:In 'Device Manager' there is a Trackpad entry in the 'firmware' category, but no driver in the  'Mice and other Pointing Devices' category. I'm not sure if that's normal for this device, and I guess if I have no driver it doesn't explain why my trackpad sometimes *does* work. Also, when looking for a fresh driver download on Lenovo's support page for this machine, there was no entry for trackpad drivers, which struck me as odd. Edit: it has occured to me it's possible this is a hardware issue, so I'll just add that I haven't knocked or spilled anything on the machine either. There was no obvious physical event that preceded the first time this happened.

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RELEVANCY SCORE 92.4

I did a fresh install of windows and a handful of Fn keys aren't working Mic Mute (F4)Airplane Mode (F7)Disable Webcam (F8) Is there a specific utility or driver I need to install? I've looked through the downloads page for the laptop as well as using the auto update utlities and I don't see anything that might fix the issue. 













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A:720S-14IKB (Type 81BD) Some Function Keys Not Working After OS Install

Alright nevermind, I found the utility after a bit of searching. It wasn't indicated anywhere on the specific Support page for the laptop though, go figure. https://support.lenovo.com/se/en/downloads/DS500481

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RELEVANCY SCORE 92.4

Hi, I have the Lenovo Ideapad 720s-14IKB(type 81BD) and today I saw there is a Windows 10, version 1803 update.When it was prepared, this message was shown -> "We found some issues. Select this message to fix and finish updating.".When clicking on "Fix issues" button there was a message saying my hardware is not supported by this update.Even though my device is  listed in the supported devices, I am still unable to update to version 1803.Anyone else having similar issues regarding this update? How can I fix this?

A:Windows 10, version 1803 incompatible with 720s-14ikb(type 81BD)

I have heard of some people getting beyond that error by using the Microsoft Media Creation Tool to create version 1803 installation media on a USB or DVD, and then running the upgrade successfully, but that said, I have also heard that Microsoft has disovered some serious issues with 1803 on laptops that have hybrid video cards (Intel HD and Nvidia discreet etc) and systems with Intel NVMe SSD's, so Microsoft may be pulling back on upgrading those systems until it can iron those problems out, so I personally would wait a bit if either apply.  Cheers,

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RELEVANCY SCORE 92

I just bought a IdeaPad 720S-14IKB labtop and i have to say that i am impress with it but i have a few questions about it First is the white charging LED on the side it dosen't turn off. i plugged it in twice already and it is solid white even at 100% charge not turning off? how do i know if is fully charge by looking at it since it dosen't turn off? i left it charging overnight and it the morning after 10 hours of charge the light was still on whole the laptop was at 100% this is the first laptop i get that the light doesn't turn off. is this normal??? also i was installing all the updates and all "Lenovo Diagnostics Tool Lite" included. so i click on that program and it is nice to see that i can test my internal parts. i did the sound one and i can't seem to complete that test since i get to 100% and it gives me a "Cancelled" statuts not giving me a results? is this also normal???   

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RELEVANCY SCORE 92

Hello,The problem: I have a problem when I open new tabs in Chrome. The cursor jumps a bit, and becomes a new icon (bad pixel rate), and the cursor will not click on anything before the loading is finished. This is very irretating when browsing in Chrome. Anyone who can help me?

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RELEVANCY SCORE 92

Can someone tell me how to change the Lenovo 720S-14IKB bios / boot logo?Tried to search for a guide, but I didn't find info on how to change the image on this particular laptop model.I want to replace the current image with my own custom image.Thx in advance for any help that will solve my challenge.

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RELEVANCY SCORE 92

Hi. My fingerprint scanner worked when I got the laptop November 2017 and then all of a sudden it stopped working.I thought it might have been an update for Windows or problems with the Lenovo Drivers.It showed up on and off in the Device Manager area but always with the Error Code 10 when it did show up.Most if the time it wasnt even on the list.I have done all the steps ive read from unistalling and reinstalling drivers, updating bios, clearing TPM on both windows and bios, Windows In-Place Upgrade,etc.... NOTHINGhas worked. Spoke to Lenovo Live HelpNothing worked they told me to contact Microsoft. Spoke to Microsoft Live HelpNothing worked. They could not get it fixed. Now after a BIOS update that Lenovo suggested it showed up again but now says:Currently, this hardware device is not connected to the computer. (Code 45)To fix this problem, reconnect this hardware device to the computer.Pic attached. Then it disappeard again from the Device Manager List! After trying all this....is this what I think it is??Hardware malfunction and I will need to send it back to Lenovo for replacement?? Wanted to hear all your thoughts! errorgone from device manager list 

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RELEVANCY SCORE 92

I got this laptop in Jan this year, and basically it's been great except for some strange CPU behaviour which I need answers for...Mine has the following configuration: i7-8550u / 16gb RAM / 512gb PCIe SSD / MX150 SituationOut of the box, when under heavy load / doing stress tests the CPU refuses to go beyond 2ghz on all 4 cores. But in regular use clock speeds on all 4 cores do spike to almost 4ghz sometimes. Basically it seemed quite glaring to me that the CPU wasn't performing as well as it is capable of. Turbo boost was acting strangely. My investigationsTried using throttlestop to fiddle with settings and it looked like turbo boost wasn't fully enabled by default. Throttlestop enabled me to let turbo boost run indefinitely without the 2ghz cap. However over time I noticed that my CPU easily rose to temps beyond 80C (in short bursts) even in regular use. This was with the default TDP limit configured to be 18.75W. So in order to test the system's cooling performance, I did a CPU & GPU stress test at the same time using XTU & Furmark and CPU temps went into the high 90s and caused my system to crash. Same thing happened even after I lowered the TDP to 15W. All of this happened despite undervolting the CPU.  For context ambient temps here are usually ~30C, and regular use temps are perfectly fine at ~40-50C (excluding the above). So now fearing that longevity might be affected cause of consistent heat spikes I have reset all s... Read more

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RELEVANCY SCORE 90.8

Can someone tell me how to change the Lenovo 720S-14IKB bios / boot logo?Tried to search for a guide, but I didn't find info on how to change the image on this particular laptop model.I want to replace the current image with my own custom image.Thx in advance for any help that will solve my challenge.

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RELEVANCY SCORE 90

Hello everyone, At a random time, when the cursor changes from "normal" to "working in background" it becomes pixelated and jumps away a few centimeters and then returns back to original position when loading is complete.The only way to work around this is if I make a change in mouse settings, like "enable pointer shadow" and then revert it back as it was. I am on an Ideapad 720s 14IKB running Windows 10 x64 Version 10.0 Build 16299 Is anyone else having the same issue?

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RELEVANCY SCORE 84.4

HiI recently purchased ideapad 720s from online retailer, and as per lenovo page the display is of IPS type.However, the merchant page is showing LED type.How can I know the exact display type of my laptop?Here is the Manufacturer No: 80XC002YADRegards 

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RELEVANCY SCORE 83.2

frequency or type ram compatible to upgrade, and does this device support intel optane?

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RELEVANCY SCORE 82.8

Hello, I would like to know if the thunderbolt 3 lane in lenovo ideapad 720s 15,6" laptop is 2 or 4 lane? I am planning to use the computer with an eGPU in the future, so it would be nice to know. Thanks for the replies in advance. Greetings, Mikael

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RELEVANCY SCORE 80.8

Hello, I recently bought the Lenovo 720s - 14" with i7 - 8th gen Intel processor. The laptop is great, but I experience a very noticable moving color banding (see the video)! Has anyone  seen such thing on your 720s or should I repalce mine?Thanks!

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RELEVANCY SCORE 80.8

Hello, I recently ordered an Ideapad 720s (13-inch). Lenovo web site mentions "*Connecting to a display requires a USB-C to HDMI or DisplayPort cable, depending on display interface." I was wondering I should buy a USB-HDMI cable or an adapter to connect this laptop to an external display. Does anyone know whether the Ideapad 720s (13-inch) model supports native HDMI through a USB port, namely the HDMI Alt Mode for USB Type-C? (as specified in https://www.hdmi.org/manufacturer/HDMIAltModeUSBTypeC.aspx) Regards,Franky

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RELEVANCY SCORE 80.8

Hello,I buy a new laptop Lenovo ideapad 520s-14IKB (type  80X20), and now when I use the laptop is freezing after few time, I use lenovo check to detect the issue but the laptop is pass.Thanks.

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RELEVANCY SCORE 80

Hi everybody, My laptop 320S-14IKB (Type 80X4) Laptop (ideapad) is two months old. and now started shutting down suddenly without any notification, the screen only becomes black. this is all happens whenever the power cable is disconnected, although the battery is full. So to avoid this sudden shutting down I have to keep my laptop connected to power. Once I disconnect the cable it lasts five to ten minutes then shutting down again. Please help.

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RELEVANCY SCORE 80

My laptop freezes regularly (a couple of times a day). The freezes are completely random and not dependent on any installed software (according to my testing). When the computer freezes I have to hold the power button to shut it down - no other functions are responsive. I ran a hardware scan and nothing showed up. The BIOS and all drivers are up-to-date. I installed CoreTemp and monitored the temperature at the time of freezes and the computer did not seem to be overheating. I have sent it in to Lenovo twice already for repair. The first time they said they found a defective component on the mainboard and replaced it. But in doing so, they disconnected all I/O ports on the right hand side of the computer and didn't test it before returning it to me. The second repair was to reconnect the stuff they disconnected. However, now the freezes are reoccurring and I would like to know if anyone has a solution to this that works before I send it back to Lenovo for a third "repair". This problem is very difficult to reproduce as it's random and so it will be hard for Lenovo to fix it and I have little faith in them to do so.

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RELEVANCY SCORE 76.8

320S-14IKB (Type 80X4) Laptop (ideapad) very slow/ hard disk sound very noisy i need helllp ? What should i do ??!

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RELEVANCY SCORE 72.4

Hi, my 720s does not respond (go to sleep, shut down, turn screen off, etc.) when I close the lid. I have tried both "sleep" and "shut down" options under "when I close the lid" in power options. I am able to sleep or shut down via the physical power button or the start menu. Is this a hardware issue?

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RELEVANCY SCORE 71.6

Hi, I ordered an IdeaPad 720S - 14IKB on the 15/09. I was especially enticed considering it said that it shipped within 1-2 business days and I needed it asap for college. It's been almost 10 days, and my order still says "In Process". The money has been removed from my account, I received an email saying it would ship in 1-3 days. Nothing progressed so I rang support on the 21/09, and was told there was a delay with this model (no details on what about), I was told I'd receive an email with an estimated shipping date the next day, but I got nothing. I also reported that there was an error in my shipping address, and that the billing address was more accurate so as to not confuse the courier. I rang again yesterday (25/09) and was told they would send the message on to request the shipping address be changed to the billing, and I would also be given an update on my order status before 6pm today and the guy apologised that I wasn't getting any relay of my laptop. I feel like I'm being runaround here and would appreciate if some staff online would be able to give me some help, since the people on the phone aren't doing anything at all. I understand companies being iffy about altering shipping address, it's a very small error, where I accidently put my workplace on to my residential address when it's actually in a different town. Any help is appreciated.Thanks

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RELEVANCY SCORE 71.6

HI! I bought an ideapad 720s-14IKB with 8th gen processori5-8250u/4GB RAM/MX150 this model. I don't found any thunderbolt 3 controller information on my laptop by using HWINFO:   The dirver I used is DS500874 and I have installed Intel TB3 Software manually.I still can't find my controller. However, other user in this forum show a normal controller inspection:I think this is driver problem but I have tried reinstallation many time and failed.  Note:1. I have do a clean install of Windows 10 1709 just after I bought this machine.2. My BIOS version is somehow strange "6LCN17WWV1.03" which can't find on Lenovo official support.3. Full Lenovo Vantage diagnosis is done but no problem founded. 

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RELEVANCY SCORE 70

Hello, my name is Bob and i'm a content creator who covered the lenovo 720s-14ikb 81bd on my channel.  All I need to know now is how many pci-e lanes the TB3 post runs on. Please advise,Bob

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RELEVANCY SCORE 69.2

Installed memory strips in blue slots as instructed, and all I get is a black screen. The first time I installedCrucial 16GB Kit DDR3 1600 MT/s (PC3-12800) CL11 Non-ECC, UDIMM 240-Pin Desktop Memory CT2KIT102464BA160B/ CT2CP102464BA160B  Didn't work.  The second time I installed Crucial Ballistix Sport 16GB Kit (8GBx2) DDR3 1333 MT/s (PC3-10600), which they suggested.  Same black screen.  Do I have to fill all 4 slots, change the Bios or what? 

A:Upgrade memory to Crucial Ballistix Sport 16GB Kit (8GBx2) D...

@Meander, welcome to the forum. Here is the memory that is recommended by Crucial.  I suggest that you contact their Tech Support for help.  They are the experts on their memory and should be able to help you with how to populate the memory slots. Please click the Thumbs up + button if I have helped you and click Accept as Solution if your problem is solved.

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RELEVANCY SCORE 69.2

I want to upgrade memory 8GB to 16GBmy Lenovo x250 can use Crucial 16GB DDR4-2400 SODIMM or best solution for me Thank.

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RELEVANCY SCORE 68.8

I currently own a Lenovo YOGA 710-14IKB with 8GB of ram and I would like to upgrade it  to 16 GB if possible.I tried searching online to see whether this is possible or not, and got mixed results.I understand there is only 1 memory slot, so I will need to buy a single 16gb RAM card, however I want to make sure that the motherboard will support it..Thank you!

A:Lenovo YOGA 710-14IKB UPGRADE RAM TO 16GB

Yes.  It will support it.

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RELEVANCY SCORE 68.8

Hi there! Received new verion of bios for Lenovo 720s-14ikb 81BD model - bios 6LCN22WW(V1.08) and I cannot update it because I receive an error message. Screenshot in a attachent.

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RELEVANCY SCORE 64.8

Hi, Interested in buying the 720S 14 with 8th gen intel cpu and MX150,  but I can't find one to actually hold in my hands and get a feel for. I have seen other models in the 300 and 500 series and wondered if any of them are a close match for the 720s 14 in looks and build. This is in the UK if this makes any difference. Many thanks in advance Manco  

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RELEVANCY SCORE 61.2

I recently bought an Ideapad 720s, it was working smoothly without any glitches but suddenly one day after a Windows 10 update, it started having issues. First, I could not login, it said my profile was not found and then later when I fixed that my fingerprint as a sign in option does not work anymore. I wasn't facing these issues before the update. NEED HELP!!!

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RELEVANCY SCORE 61.2

I recently got myself an ideapad 720s. It seams I have some distortion on some symbols or in text in programs. It had happen even with the mouse cursor. Anyone knows if it is "normal"? Or anyone had experienced this siuation? Thanks

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RELEVANCY SCORE 60.4

Hello all, New to the forum. Just got my new IdeaPad and USB-C dock. Only issue I'm having is getting the power button on the dock to power up the closed laptop. Any ideas? Thanks, Scott

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RELEVANCY SCORE 60.4

Hello,I'm thinking about buying this laptop and trying to verify that it supports USB-C DP Alt Mode so I can connect multiple (2) monitors using a USB-C dock. Thank you for you reply.

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RELEVANCY SCORE 60.4

Hi, I've noticed there are two models of Ideapad 720s 14" i5 8250u: 81BD000TUS and 81BD001NUS. Can somebody describe the difference? May be the difference in screen frame, e.g. and 

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RELEVANCY SCORE 60.4

is ideapad 720s 14" ram upgradeable?thanks in advance

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RELEVANCY SCORE 60.4

I would like to put my old hdd in Y500 into a new ideapad 720s. Is that possible? Do I need some cable to do that? Thank you for your help.

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