Problem with screen. Clevo W253EF

Hi guys. I have a problem with my laptop. I would appreciate your help. I have the laptop of the title. My lcd was broken so I decided to buy a new one from ebay.

The original screen was LP156WH4 (TL) (N2). (15.6'' 1366*768 40pin)

I bought a FHD screen (LP156WF1 (TL) (F3)). I thought it would be plug n play. I plugged it in. The LCD screen lights up but there is no image at all. The entire screen is blank. An external monitor connected to the laptop VGA port works fine, there is no problems with the external video output at all. What is going on?

 

That's because your current cable only supports up to 800p resolution. For 1080p a 2-channel cable is required, which means about 10 more wires that have to be hooked up (40-pin cable does not mean all its wires are actually present). It's your luck that these panels are otherwise compatible, so you didn't kill it when firing up the laptop.

Fortunately this system can output 1080p just fine once you get the right cable; part nr. is ' 6-43-W25P1-010-A'.

 

Thank you very much. I knew it that I could count on the forum. Always valuable help. So the solution is either the original display or the cable 6-43-W25P1-010-A? Where I can buy this online? It has to be the W25P1? I found 6-43-w27p1-010-2a. Will it work or is only for 17'' laptops?

Are you aware of the max cpu upgrade? i5-2450m is the current cpu. Can I go up to i7?

 

Different cables will have different lengths and the connector on the motherboard end may be different, you have to take it case by case.

Yes usually you could go to the i7, check to see if models shipped with it at the time, also double check if the heatsink is different.

 

So, the 6-43-W27P1-010-2A cable if it has the same connector on the motherboard end, will work? Doesn't matter that it is for 17'' screen? The first image is mine cable. The second is the one I found to buy. The other parameter is to find out if the 6-43-W27P1-010-2A supports 1080p resolution right?



This is a print screen from W270EFQ/W270EGQ service manual. In the part list has FHD screens the part number of the wire is 6-43-W27P1-010-E. I think W270EFQ uses the same mainboard with W253EF. So the connector is the same I think.

 

Anyone? This cable 6-43-W27P1-010-2A comes from 17.3' 1600*900 laptop 40pin. Supports FHD? According the service manual the answer is yes. The next question is, will it work for me for a 15.6 FHD screen? The 2 laptops share the same mainboard.

 

Yes, if it supports 900p then 1080p (and 1200p) will also work. If you can find out the exact panel nr. of that 1600x900 then we'd know for certain whether that cable is compatible.

 

I have the service manuals of W270hpq,hnq,efq,egq,esq. All of these 17.3 laptops share the same cable, 6-43-w27p1-010-e for all the variations of the panels. Why then for the model w253efq has different part no for the cable? It's because the size of the screen so it needs more length? IAlso I found this 6-43-w25h1-010-a. In the service manual of W25aef/aeg says that supports both my stock screen plus FHD screens. It has one cable part no for all the screens. The mainboard is the same.

 

Quite so; ~300mm vs. 335mm.

 

My new screen is ChiMei N156HGE-L21.

 

Hi guys. Today I installed the new cable (W270HPQ 6-43-W27P1-010-2A). There is a problem. At the startup the monitor is OK in the welcome logo. The same in the bios. But then darkness. What is going on? The cable is wrong or the panel?

 

Can you plug in external screen and check if it's recognized?

 

Yes. I have an external monitor. That's the way I work now.

 

Neither. Your OS is probably confused by the swap, still having the old, superfluous registry entries present.

Could use an autoexec registry thingy to make it auto-reinstall, but since you have an external screen working it's easier; uninstall the old 768p via Device Manager and use the ' detect hardware changes' option. That should make it aware of the presence of the new 1080p panel.

Just be sure to remove the right panel, otherwise you'll have to de- and re-attach the external monitor.

 

No, that's not the case. I installed a fresh copy of windows using only the external monitor. Yesterday I installed for the first time the new monitor with the new cable. But just to be sure I tried your solution, I uninstalled all the monitors from device manager but nothing. I didn't mention that the back-light of the screen is on, but it shows nothing, only the boot logo and the bios.

 

Post a screenshot from hardware menager with Displays expanded.

 

Generic PnP Monitor(external) and Digital Flat Panel, 1024x768, 60Hz(new panel). I will check if it needs a fresh format. I will run windows setup using only the new monitor, without the external.

 

Guys, I tried safe mode and it worked. So does in windows setup. Is there a chance the cable doesn't support the native resolution FHD? Or it is a software related issue? I uninstalled it in safe mode, I installed it again. Restart but again nothing. Only the back light is on after the boot logo (bios logo). I have installed windows using UEFI.

 

What resolution do you have in safe mode?

 

Now I saw it is 1920*1080 in safe mode. So it's not what I said earlier. I think the problem will be fixed with format and clean install of windows. Is it possible UEFI be the problem? I uninstalled the intel hd graphics when in safe mode. Asked me for restart but then I got Fault In Nonpaged Area error. After 2 boots with the same error windows repair restored the system.

 

Have you tried uninstalling this Digital Flat Panel and installing it again?

 

Yes. You mentioned a post of mine. In that post (#15) I said that I tried that.

 

Each gpu driver install stores copies of every monitor's properties in the registry as well as all possible combinations of each. Uninstalling the old monitor, both gpu drivers and then re-installing them would sort that mess.

But really, the clean Windows install you mentioned earlier ought to have done the same thing ...

UEFI shouldn't matter unless there's a bug in the (v)bios. Could try a clean non-UEFI install on some spare disk; that should enable the legacy part of the vbios as well.

 

So you suggest to install windows with legacy bios? I said that clean install maybe works because in windows setup the screen is ok.

 

Ah, so you didn't proceed with the install then? Just up to the setup screen?

In that case just do the monitor+gpu uninstall first and re-install them, that should probably be enough. Make sure to use DDU and get rid of all traces.

 

No I didn't proceed. I did that with the drivers, when asks for restart then I get Fault In Nonpaged Area error. I have to uninstall both Intel HD & Nvidia? With the external on or off?

EDIT: I uninstalled with DDU from safe mode without the external monitor plugged in. Everything was fine. The monitor was OK. I installed the Intel HD 3000 driver from windows update. The problem is there. Again, the same problem.

 

Yes, and preferably off, but if you have no image otherwise then it's alright to leave it on.

 

When I install the HD3000 driver I have the same problem. Can I bypass intel hd and use only nvidia?

 

IIRC you should install the NVIDIA driver first (notebook version) followed by the Intel driver.

 

I cant do that. It says that first I have to install internal graphics then nvidia. From the bios I cant disable it like other laptops. I want to use only nvidia. But I cant, I think. Or I have to find a better driver, because that's the problem. The driver.

 

On dual graphics machines/machines with Optimus, the Intel driver usually precedes the NVidia driver, otherwise the NVidia driver won't properly detect the hardware.

 

This laptop came with Windows 8. I'm thinking that the original monitor (1366*768) might have the same issue. The driver is the same so will be the problem. So the change of the panel with the original one maybe won't work. I am thinking in installing windows 8 to see if this work.

 

Nope. Neither Windows 8 worked. I installed them on an old HDD. Every thing was fine through the setup process. When I installed intel's driver the problem came up again. No image only the backlight is on. I can't understand what is going on. If I knew that the original panel would work I would change it with the original.

 

Try an older Intel HD driver, preferably one directly from Clevo. See their drive page for downloads (they're all ancient versions). Mind that it will take a while; it's running behind a 56k modem.

 

Already did that. Again the problem remains.The only solution is to uninstall it totally and somehow prevent windows update from downloading the driver.

 

I think the cpu grapics is to blame. Somehow is faulty.

 

I tried with Windows 7, just in case. One more failure.

 

Can you try running a single stick of ram?

 

Yes. I will try when I get back home. 16GB dual channel is my ram right now.

 

I tried with one stick, nothing.

 

Guys I'm thinking in contacting the ebay seller, tell him my problem and ask to change the panel with the original one. I can't understand what is going on. I'm sure it's software problem, not hardware.