clevo P377SM-A black screen and beeping

so this all started when i was playing a game. i experianced screen tearing. then the computer locked up.
i restarted to a blackscreen and just fans spinning.
fast forward like 1 month

i have since then replace the ram, motherboard, gpu(980m)
it will still not post. it just sits at a black screen and beeps until it eventualy just shuts its self off.
the beeps are all the same, about 1sec apart.

any help on this matter would be much appreciated!!

 

When you replaced parts, did you go back and make sure everything is seated properly in the system? Are you able to run a program to see what the temperatures on the CPU/GPU are?

 

yes iv double checked everything is seared and all the cables are connected. i cant run a program to see because i cant even get a post screen

 

Take a look at your CPU. Are the pins damaged in any way? Anything caught in between them or inside the socket? (It could be a bad CPU and not be apparent.)

 

Sorry about late reply got busy with the holidays. But I found a 4910QM out of a friend's laptop I put in mine real fast and still the same issue came up

 

The screen might be defective (try an external monitor) or it could've been bricked. The latter is possible if you have an nvidia card and an LVDS panel, if so then the issue has a high chance to crop up by running Windows 10 and/or EVGA Precision X, but can happen when running neither, too. This issue is fixable, at least.

It's also possible some other component is shorting, which will prevent the power-up cycle from completing. Try to remove as many superfluous components as possible, including hdds and keyboard.

 

So then a fix for that would just to replace the display?

 

Yes, that is possible. But test whether it is actually defective or bricked first:

• remove bezel, disconnect lcd cable and try to boot (checks lcd or cable shorting)
• follow these instructions (checks for and fixes edid corruption / lcd bricking)

You've ruled out out pretty much everything else (except the keyboard) and spent quite a bit on that, no doubt, so better make sure the new lcd will do the trick.

 

I unplugged the cable and no change.
As for fixing it. Am I missing something as to how I boot my laptop with the program if my screen doesn't work?

 

With an external screen. This system can boot without any screen connected (it'd just stay black, but still light the leds and wouldn't beep or shutdown on its own), so if it still didn't boot then it's not the display or its cable shorting or otherwise halting the power-on cycle.

Really, there's not much left; keyboard, touchpad and power button board. These, too, can safely be disconnected and it'd still boot. Only hard part is the power button, of course, but you can jump-start the laptop by shorting pin #4 and #5 on the board's motherboard connector using a small screwdriver or such.

Another long shot; remove battery and try booting adapter-only and also the reversed situation.

 

I'll try removing keyboard and such first. Then the power supply to test those real fast.

 

So I can't get it to load the USB. I have it hooked up to my external. I tried with the internal display attached/disconnected.
Have a external keyboard and mouse attached. Tried it with my keyboard off.
Also with battery or pluged in.

 

Still the same beep-then-shutdown pattern?

This is as close to mission impossible as you can get; almost everything has been ruled out already. Might try a different lcd, after all, perhaps the 377 does this differently than the 375 series. Would be better to be certain beforehand. If you have some other systems, perhaps they can stand in as donor. Only need the check the panel nrs. to know whether they're compatible. Can also use the old panel's number (sticker on the back) to find the cheapest substitute that will work. There's always a few cracked-yet-working screens for sale, so that wouldn't be much of an investment.

And where did the 980m came from, originally? The gpu is pretty much top of the list of components that are prone to failing, so it'd be good if these could be checked on another laptop.

 

so i got my laptop to work. i ended up just ebaying a lcd. got it put it in and same issue.
but you said the 980 was prone to failing so i put my old one in that i orignally thought was briked. turned it on and got a post.
first just want to thank you so much for the help. now im gonna switch out the parts i bought with old ones and return the new ones.

but i did try my old lcd and that didnt work so that must have been the problem and i guess the 980m i bought wasnt helping the issue.

so i got the 980m form ebay and it said it was pulled from a alienware laptop. i read that you have to flash the bios on the gpu for different laptops. is this true or did i just get a bad gpu?
again thanks for all the help

 

Congratulations! Good to hear all the effort paid off in the end .

And it depends very much on the system; some are more particular than others. Since you have an SLI system it is relatively easy to flash a known-to-be-working vbios to that card; working card in 1st slot, bricked/incompatible card in the 2nd (don't need the SLI cable) and flash the right vbios (Prema's), taking care to run only the ' ModMe2.bat', unless your old, working card is also a non-gsync/8GB/980M, in which case you could flash that one as well.

You never mentioned which type of lcd this was; a lot of motherboards revisions of the P37* systems have two lcd connectors, one eDP (30-pin) and the other LVDS (40-pin). If it's an LVDS then it might be possible to get it running again, even if it won't boot when it is hooked up. Try the external monitor with the lcd disconnected, boot and then reconnect the lcd or, if that fails, boot with the working lcd and then hotswap it (carefully *) with the dead lcd. In both scenarios; if the 'dead' lcd suddenly turns out an image then its edid was bricked by the Nvidia gpu. This can then be fixed by using the guide I've linked to earlier. There have been reports of P37* systems being affected by this issue, so this a very real possibility.

Spoiler: * hotswapping panels

It is possible to do this on the lcd-end of the lcd cable or on the motherboard-side. The lcd is easier to reach on this system, not requiring you to remove the top cover. Downside is that it is a fair bit more dangerous since the 0.4 or 0.5mm pitch of the lcd connector means it is relatively easy to insert the cable a little slanted, potentially shorting one or more pins while the cable is 'hot/live'. The motherboard connector is much, much safer since it can only be inserted parallel, so there's no risk at all.

 

awesome ill do that to my other card today.
as for my lcd its a lvds connector. idk if ill try to get it working. i was looking at switching to the 120hz display but i can find the display for cheap but i cant find the cable i need anywhere. i just got this one quick off ebay to see if it fixed my problem lol.

 

in bios ( f2) if u have a gpu named nvidia or unknow, its good mean working, it will write nvidia with prema or clevo vbios. if you cant boot the system= blackscreen+beep=DOA gpu ( return it..) or it beep till shutdown in desktop (10seconds)= memory gpu dead/dying= return gpu too.