yep finaly found the problem cause on my case.. just look the picture, somehow the lower part of my lcd frame is bumpy a bit.. after i check it(open monitor frame) the case itself is wraping & stick something on bottom lcd that says "dont touch" and seems very teriable..
#just make sure open lcd frame slowly & carefully if u decide to check
after that i saw 3 cable near that area is not placed corrrectly and maybe make the frame bumpy a bit, then i try to placed them on good position.. after that everything works fine, even rarely no display again, i just slow press on conector cable area(look at pict 2)
A 2,7 code relates to Display Failure. You may need to replace the display but you can also open up your laptop and check that the display cables are seated properly and not damaged/crimped.
Unfortunately if the board doesn't detect a display then you won't be able to plug in an external display to get it to work. It's worth a try though.
It seldom works but you can also try a power drain to reset the system.
Unplug the power adapter and the battery. Hold the power button down for 30-60 seconds. Plug the adapter back in and test. You will have to open up your laptop to unplug the battery from the motherboard.
thanks u but look, Craftsman checked the laptop and he told bios chip problem. i dont remembered exacly but he told this machine has 3 bios chip and one of them is cleared and he dont have a licence to flash the bios . in my country Craftsmans are dums so is there any chance and its bios chip problem?
I have never had this problem, but I have taken apart my 15 R4 quite a few times to fix thermal issues.
"LCD failure" is not very specific. It could simply be that the LCD connection is loose.
I guess the best-case scenario is that it's just the connection to the LCD. It's possible the LCD connector on the north side of the board became a bit loose when you took out the battery. So the first thing to try would be to pull it out and try to plug it in again and make sure it's seated properly. Also check for any dust or corrosion on the connector and clean it with a bit of rubbing alcohol.
You don't need to take the whole system apart to get at the LCD connector. You just need to take off the bottom outside panel and the black plastic IO shield. You can then turn the laptop rightside up and you will see the LCD connector and 2 other connections at the back.
If it's not the connector, then it could be the LCD circuit on the MOBO, or the LCD panel itself. This would mean that 1) running without the battery caused a short because the design of the charging circuit sucks OR 2) pulling out the battery connector physically damaged some component on the board, even though you were careful. This can happen if there's a component that's about to fail or the solder is cracked.
Either way, if cleaning and replugging the LCD connector doesn't work, you would need to send your system to Dell or buy the parts to attempt to fix it yourself. Fixing it yourself is a bit risky because you don't know what component failed exactly. You could end up buying a new LCD panel and connector for around $200, go through the process of installing it, and then find it was actually the MOBO that failed.
All signs point to a display failure or bad cable connection. You can try to do a BIOS recovery using the guide below. At this stage it's worth trying anything.
<ADMIN NOTE: Broken link has been removed from this post by Dell>
You should also have some very small CMOS jumper pads on your board (possible near the RAM slots). I don't have your laptop but it may also be worth trying to reset the CMOS (BIOS) by jumping these pads.
Have a look through the Service Manual to see if there are any troubleshooting tips that could help you.
Hi @Tomara_x your 15 R4 diagnostic code 2,7 says Display Failure. If the BIOS/UEFI had failed there would be no POST or diagnostic code. Focus on connecting your 15 R4 to a monitor and then switch on. Please share the result.
nuttttt
3 Posts
1
January 9th, 2022 18:00
yep finaly found the problem cause on my case.. just look the picture, somehow the lower part of my lcd frame is bumpy a bit.. after i check it(open monitor frame) the case itself is wraping & stick something on bottom lcd that says "dont touch" and seems very teriable..
#just make sure open lcd frame slowly & carefully if u decide to check
DELL-Nat M
Community Manager
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3.6K Posts
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September 5th, 2025 15:39
The 2 red and 7 blue blink pattern on the Alienware 15 R4 power button is a diagnostic code that indicates a Display Failure.
What This Means
This error typically points to one of the following:
Troubleshooting Steps
1. Power Drain Reset
2. Check LCD Cable Connection
3. Run LCD Built-In Self-Test (BIST)
4. Test with External Monitor
Next Steps
If reseating the cable and running BIST doesn’t resolve the issue, the problem may be:
Need Help?
(edited)
mattyb3
5 Practitioner
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1.7K Posts
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November 9th, 2020 12:00
A 2,7 code relates to Display Failure. You may need to replace the display but you can also open up your laptop and check that the display cables are seated properly and not damaged/crimped.
Unfortunately if the board doesn't detect a display then you won't be able to plug in an external display to get it to work. It's worth a try though.
It seldom works but you can also try a power drain to reset the system.
Unplug the power adapter and the battery. Hold the power button down for 30-60 seconds. Plug the adapter back in and test. You will have to open up your laptop to unplug the battery from the motherboard.
Tomara_x
1 Rookie
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18 Posts
0
November 9th, 2020 12:00
is there any way and is this bios chip problem?
i tried to connect on another monitor and its not working still is same beep
Tomara_x
1 Rookie
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18 Posts
0
November 9th, 2020 13:00
i opened last week and mabe display cable was good condition so what can i do? whene i'm pressing D for display test its still black screen
mattyb3
5 Practitioner
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1.7K Posts
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November 9th, 2020 13:00
https://www.dell.com/support/manuals/en-us/alienware-15-r4/alienware-15-r4-service-manual/diagnostics?guid=guid-5c341b78-b63d-499c-89d4-d341c006e437&lang=en-us
Don't think it will be a BIOS issue. Check the display cable connections first and go from there
Tomara_x
1 Rookie
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18 Posts
0
November 9th, 2020 14:00
thanks u but look, Craftsman checked the laptop and he told bios chip problem. i dont remembered exacly but he told this machine has 3 bios chip and one of them is cleared and he dont have a licence to flash the bios . in my country Craftsmans are dums so is there any chance and its bios chip problem?
A51-06
5 Practitioner
•
3.1K Posts
1
November 9th, 2020 14:00
I found a guy on Reddit with an answer.
I have never had this problem, but I have taken apart my 15 R4 quite a few times to fix thermal issues.
"LCD failure" is not very specific. It could simply be that the LCD connection is loose.
I guess the best-case scenario is that it's just the connection to the LCD. It's possible the LCD connector on the north side of the board became a bit loose when you took out the battery. So the first thing to try would be to pull it out and try to plug it in again and make sure it's seated properly. Also check for any dust or corrosion on the connector and clean it with a bit of rubbing alcohol.
You don't need to take the whole system apart to get at the LCD connector. You just need to take off the bottom outside panel and the black plastic IO shield. You can then turn the laptop rightside up and you will see the LCD connector and 2 other connections at the back.
If it's not the connector, then it could be the LCD circuit on the MOBO, or the LCD panel itself. This would mean that 1) running without the battery caused a short because the design of the charging circuit sucks OR 2) pulling out the battery connector physically damaged some component on the board, even though you were careful. This can happen if there's a component that's about to fail or the solder is cracked.
Either way, if cleaning and replugging the LCD connector doesn't work, you would need to send your system to Dell or buy the parts to attempt to fix it yourself. Fixing it yourself is a bit risky because you don't know what component failed exactly. You could end up buying a new LCD panel and connector for around $200, go through the process of installing it, and then find it was actually the MOBO that failed.
mattyb3
5 Practitioner
•
1.7K Posts
1
November 9th, 2020 15:00
All signs point to a display failure or bad cable connection. You can try to do a BIOS recovery using the guide below. At this stage it's worth trying anything.
<ADMIN NOTE: Broken link has been removed from this post by Dell>
You should also have some very small CMOS jumper pads on your board (possible near the RAM slots). I don't have your laptop but it may also be worth trying to reset the CMOS (BIOS) by jumping these pads.
Have a look through the Service Manual to see if there are any troubleshooting tips that could help you.
https://topics-cdn.dell.com/pdf/alienware-15-r4_service-manual_en-us.pdf
A51-06
5 Practitioner
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3.1K Posts
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November 9th, 2020 16:00
I dont even understand how a bios chip is going to cause a display not to turn on.
Tomara_x
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18 Posts
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November 10th, 2020 08:00
Tomara_x
1 Rookie
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18 Posts
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November 10th, 2020 08:00
A51-06
5 Practitioner
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3.1K Posts
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November 10th, 2020 08:00
Tomara_x
1 Rookie
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18 Posts
0
November 10th, 2020 13:00
not working :*(
crimsom
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6.1K Posts
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November 10th, 2020 14:00
Hi @Tomara_x your 15 R4 diagnostic code 2,7 says Display Failure. If the BIOS/UEFI had failed there would be no POST or diagnostic code. Focus on connecting your 15 R4 to a monitor and then switch on. Please share the result.