jon7701

I am having the same exact issue, though I just reinstalled Windows 7 and we'll see if that helped, but prior it didnt matter what my voltage settings were, stock , -100mv, -25mv, -112.5mv. However, from what I have seen it only affects DX11 games for me. Games like skyrim will not crash even after long periods undervolted. Games like Shadow of Mordor, ETS2, Tomb Raider (all of which use DX11) will crash at random periods while using SLI. They do not crash however when using a single card. This was all on the latest drivers of course.

Is there any chances that flashing modded bios will fix my sli (crashing-display stopped to ressponding and have recovered/ Device has been removed or hang) problem ??

It will not fix your problem. Out of curiosity though, do you happen to have the modded ultra bay vbios flashed and just not the modded BIOS?

It boots for two seconds then shuts down and then repeats. I changed a wrong setting and now that what it does. That's why I need to remove the battery. This weekend I'll get the battery removed and will report back later.

Do you think you could try this method?

HOW TO RESET CMOS EASILY AND QUICKLY Y510P

If your system no longer boots due to a BIOS setting change you can remove the back cover and remove both sticks of RAM. Underneath the RAM is 4 copper contacts. The two on the right side that are labeled JCMOS2 need to be connected while the computer is powered on. I know this sounds crazy, I thought I broke my laptop, but as soon as I made contact with the wires the system began to boot. I hope this helps everyone, because I thought I bricked my BIOS!

JKH

P.S. If someone can tell me how to fun the fans at 100% all the time that would be fantastic and how to lower the CPU VID without causing my computer to not boot!

Someone posted this earlier in this thread but no one seems to have verified that it works.

If anyone has bricked their y510p or their y500 (which i would assume would be a similar process), you should try this, which was mentioned in the y510p bios mod thread. If it works feedback would be appreciated, because then it would confirm this is a fix. Of course, don't go bricking your y510p just in the name of science. Unless you want to.

Originally Posted by p00pyjoel

HOW TO RESET CMOS EASILY AND QUICKLY Y510P

If your system no longer boots due to a BIOS setting change you can remove the back cover and remove both sticks of RAM. Underneath the RAM is 4 copper contacts. The two on the right side that are labeled JCMOS2 need to be connected while the computer is powered on. I know this sounds crazy, I thought I broke my laptop, but as soon as I made contact with the wires the system began to boot. I hope this helps everyone, because I thought I bricked my BIOS!

JKH

P.S. If someone can tell me how to fun the fans at 100% all the time that would be fantastic and how to lower the CPU VID without causing my computer to not boot!

Try using MSI Afterburner instead for overclocking or evga precision X.

DO you know if this would void warranty or anything silly like that?

Is it detectable?

Will not void the warrenty and is not detectable if you set the settings to default before sending it in.

How did you managed to overclock your CPU?

I made some researches on Google but I can't find anything. o_O

Intel Extreme Turning Utility, it works pretty nice and will let you mess with almost anything on your cpu except disabling turbo boost (unless you just underclock it to 2.4ghz). It will also let you mess with your intel HD, unless you have an ultrabay card in.

I know for sure it doesnt have anything to do with windows 8.1, downgraded to windows 7 and i still get crashes on the latest nvidia drivers.

Edit: The latest nvidia drivers seem to be a lot more stable now. I just got done playing 2 hours of shadow of mordor undervolted by 112mv and I didnt get any crashes.

When i did use the intel hd 4600 it would still have the same graphical glitches that it would normally. I tried enabling the intel hd in the bios while i had my ultrabay card in but it still uses my onboard 755m as the display output unfortunately. So, theres no way to just use the onboard 755m without the ultrabay gpu or the intel hd?

Edit: I should be more clear. I want to either use the intel hd with my ultrabay card still inside the slot, or I want to use the 755m and i dont really care about the ultrabay card, however I dont want to have to take it out.

I have Mac os 10.9 installed on my y510p with the modified mach kernel that allows it to boot. At this point im stuck however since I cant seem to find a kext for the gt 755m even though i see a mac book that has the same gpu, thats really the only thing im stuck at since im planning on replacing my wireless card with a AC version anyways so i would probably just get a mac os compatible card that supports AC. I also dont think my ethernet port would be supported on OS X either. Other then that wireless and graphics is the only thing that keeps me off it right now.

Same here, stock everything... even the thermal paste. When i run Crysis 3 sometimes get thermal throttle... I want to undervolt but i'm not sure if i know how...

You need the modified bios which comes with the modified vbios for the onboard gpu and then you have to flash the vbios for the ultrabay gpu, if you have it. Then you have to get nvidia inspector and set your voltages. I use -112mv but i was able to get to -125mv stable which reduced my temps from throttle 97C stock voltage to 84C at -112mv. Using IdeaFan would probably reduce this by another 1 or 2C and the case mod would probably reduce it another 3-5C of so.

Edit: My ultrabay was the one that was maxing at 84C, my onboard would stick at about 82 or 83C

Ive been having issues as well. Im going to guess it is probably something wrong with the nvidia drivers. Ive had crashing on Shadow of Mordor and Tomb raider. It crashes whether i have it undervolted or not and its unpredictable when itll crash. The best thing to do would be to rollback to a previous version such as 340.52 or you could try 344.11. Im gonna try 344.11 and see how it works.

hey all,

So after trying to do this, thinking i have a 3.05 BIOS version, it turns out i have BIOS v3.7 so BIOSFixer could never do its work when i gave it bios.bin.

I assume the OP wanted the bios.bin file right? well i have nothing but that as a dump so here it is.

Attached is a BIN FILE and NOT a PDF file, i just made it pdf so it could get attached (perks of being a forum geek )

Thats the revision number, not the bios version. Your bios version would be under the info tab and not in the top right corner of your screen. It sits with the basic info of your system, its either called the info tab or specifications tab in the bios.

Also, has anyone tried overclocking their RAM from the bios? I was thinking about trying it but I want to know if anyone else has tried it.

HOW TO RESET CMOS EASILY AND QUICKLY Y510P

If your system no longer boots due to a BIOS setting change you can remove the back cover and remove both sticks of RAM. Underneath the RAM is 4 copper contacts. The two on the right side that are labeled JCMOS2 need to be connected while the computer is powered on. I know this sounds crazy, I thought I broke my laptop, but as soon as I made contact with the wires the system began to boot. I hope this helps everyone, because I thought I bricked my BIOS!

JKH

P.S. If someone can tell me how to fun the fans at 100% all the time that would be fantastic and how to lower the CPU VID without causing my computer to not boot!

Ugh, this would have helped soooo much a few weeks ago. I guess if i accidently mess something up again though i know what to do though.

A nood question, but can this whitelist procedure be used on yoga 2 11 laptop bios?

It will only work on the y510p and y410p, if you try to flash it on the yoga 2 it will either not work or brick the laptop.

Getting my y510p sent in. Will probably reflash the bios when I get it back but I probably wont mess with any settings unless I know that they work and wont brick the mobo again. lol. It seems to only be the cpu voltage settings that brick so far.

I still think its waste of time (i tried everything i could, even changing bios chip)

But, when i called to Lenovo there were 3 different people serving me, each other did know my case so if you would call again to Lenovo, probably new guy will talk to you, and you would tell him that your y510p is just not turning on. Of course if they did not remember you or sth

Unfortunantly for me I wasnt thinking too clearly when i called them apparently and they have a case number set up and everything, so even if i did just call again they would have my issue on file anyways. All I can do now is just contest them because flashing their stock bios from their website and it bricking the mobo should be covered under warrenty no matter what they say. There is no explicit warning on the bios download page in their support page that says that flashing it will void your warrenty. Anyways well see what happens, if they dont honor it i will probably just dissect it myself and try some stuff and if it doesnt work ill have to pay them to fix it or pay someone else to fix it.

Oh well, in that case do you have warranty? if yes, send your y510p to lenovo

If you do not have warranty (that's really odd, but it happens) or u had broken your warranty seals , then... hmm... in my case (i don't have warranty, soo) computer service told that CPU is damaged and they cannot fix it, imagine my suprise when my y510p turned ON after it came back from them I don't know what fixed it, maybe replacing CPU to another laptop restored sth, i also heard that they restored original "power" on motherboard but it did not help...

Anyway, if you have warranty, send it immediately to Lenovo, else you will be wasting your time like i did

They refused to honor my warrenty when i told them I tried to flash their bios from their website and they said it is a user error instead. Still fighting them on that, but in the mean time i might as well try to see if i can get it to work for now. It seems that people just have theirs start working again randomly so im trying to see if i can somehow get it to work with some key presses or just trying different power states and combinations, etc. Dont want to take it apart in case I can get them to honor my warrenty and then they return it due to seals broken or something.

What exactly did you do? Undervolting in Bios? Error while flashing?

undervolting in bios.

Try holding F2 and pressing up/down/right/left arrows to reset the bios settings. In the first post there is a video of bios which you can try following to go to reset option.

just tried it and nothing happened. i did figure out that a usb hard drive will spin up and i noticed that my ssd enclosure works where as a regular usb stick doesnt power on at all. i might try the method in post 5 too rewrite the bios through usb.

so ive noticed that with the bricked y510p that sometimes the 4th light fron the left comes on and sometimes it doesnt. i wonder if it means anything? also i got a beep out of it when holding f2 with that light on. anyone have any suggestions on anything i should try without taking it apart?

Just curious, what price did they quote?

I did just tell them it wouldn't turn on. Didn't even pay shipping. I figured they wouldn't spend the time needed to see exactly what happened.

they didnt know when I asked. They said "we wont know until after the repairs are finished." Which makes no sense but I would guess $200-$250. If the cpu died like someone said in a previous post, add about $100 more. I might try to contest it being a user accident though since their software should work regardless.

Ugh, i told them I updated my bios and that it didnt turn on afterwords but they labeled it a user accident and so i have to pay for them to replace the motherboard...such as my luck.

I should have just said i turned it off and then it wouldnt turn back on.

Does anyone know if the modded BIOS for the laptop BIOS only work, even if I have the 755M SLI?

It works with SLI. Follow the instructions in post 2 to flash the vbios to your ultrabay gpu.

Did you guys call lenovo or start a chat? I see an option for Warrenty and Claim Administration and I would assume thats the chat I want.

What excuse did you guys tell lenovo? I think ill just tell them i tried to update my bios and then it wouldnt turn on.