P150SM Prema v1 BIOS BLACK SCREEN

Well Ive had my P150SM since about two years or three ago and never had a problem. Ive also had v1 @Prema mod bios installed since it came out and everything had been working properly.

But this happened today:

For ubuntu-liveusb-botting reasons, I changed my PXE settings in the BIOS without thinking too much and saved changes and reset on bios. After that everything went dark. Computer stopped booting, nothing, ABSOLUTELY nothing shows on screen. No BIOS splash. No F2 for setup. No boot menu no nothing. Fans spin idle and keyboard is blue backlit. Laptop can stay like that forever. I need any kind of help or advice on what I can do since the laptops warranty long expired.

Thanks in advance.

 

Try...

• Removing all power - battery + AC adapter
• Press and hold power button for 5 seconds
• If you're able and willing, remove the CMOS battery and leave it removed for 5 minutes
• Reinsert CMOS battery (carefully) and reconnect power (AC and/or battery)

Do you remember what you changed before this happened?

 

Yep. Tor the pc apart and took the CMOS battery off for a whole hour and voila, pc alive again DDD. I almost cried of joy hahaha. Its a known bug on some bioses, also on some asus ones.

 

I am currently in search for the Prema v1 BIOS mod for the P150SM-A model (sager np8268) with 870m GPU and 4810mq CPU. If anyone can send this my way I would appreciate it very much!

 

I am pretty sure you can find it here on Prema's website: https://biosmods.wordpress.com/p151sm-a/

I am not sure if that would be compatible with P150SM-A, but I think it would be.

 

Thank you for a link to the v1 Prema BIOS mod! This is very much appreciated!

However, now I'm trying to figure our whether I should use v1 or v2 since 50% tell me v2 will be fine and 50% tell me I should install v1 do to the FPS drop when used with the 800m series cards. I want to be 100% certain before I do this.

From what I have read and understand, those who say v2 will work fine also suggest doing the vBIOS mod along with it. I'm not sure why, or what the vBIOS does to make it work, but can someone please verify this for me?

The exact machine I have is:
Notebook: Clevo P150SM-A (Sager NP8268)
Chipset: HM87
GPU: NVIDIA 870M
CPU: 4810MQ

Current BIOS Version: 1.03.03RLS1
KBC/EC Firmware rev: 1.03.04

 

I'm honestly not sure, all I know is people who have P15x laptops with 800m series cards seem to end up having FPS drops with v2, they go back to v1 and it's fine.

All I can say is I'm glad I only have 900m series cards.

 

Agreed, the 800 series was a total fail IMO... 900 was much better!!

 

Just stop... lol

The 6GB 870m I have is pretty good actually. I get an 8,000+ score on 3dMark11, that's not bad at all. I do plan to swap my 870m for a 980m as soon my budget allows, but for now it does what I need it to.

 

Honestly the 870M was pretty good for what it was, and its price being that of a 2nd-tier card.

 

I came here to hopefully get answers for a question I have. Has anyone installed the v2 Prema mod for P150SM-A with an 800 series card and had it work perfect? If so, what else was done to allow the 8XX card to work with the v2 BIOS?

Aside from that, does anyone know if the OP ever resolved this issue?

It would be nice to atleast know what the was. From the sound of it I would say it's hardware related. Either bad RAM, broken solder joint(s), bad GPU, or maybe even just a dead CMOS battery. People often handle their notebooks improperly, holding it by the corner, allowing it to flex along with the motherboard. When the motherboard flexes, solder joints can break and then it's light out until it gets a reflow or resoldering of the broken joints. Anyway...

 

It's bad in comparison to the 900m series simply because of the issues that the 800m series has.

I have not heard of anyone with a P150SM-A with 800m series working without any issues. I have a 900m series and I of course have not had any issues with input latency, optimus switching/not switching, any delays or frame drops or other issues of any kind. 900m series has been perfect for me.

I agree, I'd also like to know what happened with OP's issues. With that said, I do think laptops are a LITTLE bit more sturdy than you give them credit for. I had a friend who dropped his 17 inch Clevo laptop, the corner broke off and his motherboard was EXPOSED, and yet it was fine before and after he sealed it up.

 

Lol ya, I've had some laptops that were real troopers and other not so much. I've personally never had any of said issues with a Clevo, they are built to last. A solder joint would be the last thing I'd go looking for on these machines, I was just throwing it out there.

 

Hmm, true, it was a deal for the price..

 

It, in general, performed like (or a little better than) a stock 780M. Even with the stock vBIOS. Considering it was part of the cheaper mobile cards that began with the 800M series (780M was $860, 880M was $720, etc) and that its performance, excepting in memory bandwidth restricted scenarios, was basically a 780M? I'd say it was a pretty decent card to get at the time. Especially since the 880M was garbage.

870M and 860M (maxwell) were the only good cards in the 800M series lineup though. 850M was just a tad too weak, 860M (kepler) was a 760 hugely cut down with only a 128-bit memory bus, and 880M we all know about.

 

Looks like 1080 can compete with the 880M when it comes to being a blast furnace lol...

 

Ha. There's no contest, bro. 1080 wins. At least the 1080 does it by design, and on the core directly, rather than the 880M being uhhh... unintentional?