17 R4, motherboard swap options?

Question

Good day to all,

I was hoping I can get a little basic education here?

I have an older Alienware laptop, I have been holding it together with “tape and prayers” for years now. The motherboard is what needs to be replaced. I was looking to find an “equivalent” used one on ebay that I can just take my memory and hard drives swap them in and keep moving on. I have some older programs that work fine, but the companies went out of business and there are no options to reinstall them and get support from the ex-companies. I know if the boards are different, they may or may not work” I found a few that are a bit “less” and a few that are a bit “more” than

I presently have, listed below is what I have, and a list of some things I have seen. It would be nice to learn what should work and which will not. Thanks for any education and/or advice you can share with me.

Matthew

MINE:

(2017) Alienware 17 R4 > i7-7820HK 90GHz > GeForce GTX 1070
UHD 4K (3840 x 2160)
? Motherboard part # 147K8 > Product ID 00325-96116-57143-AAOEM
> Running Windows 10 <To protect you, your private information was removed from public view. All private data was saved to your private Case. DELL-Admin>

What I have seen:

17 R4 > i7-8750H > 2 GHz > UHD capable ??? > 499.99
17 R4 15 R3 > i7-7820HK > UHD capable ???
17 R4 > i7-7700 > Unknown if UHD capable
17 R4 > i9 10th Gen Processor > Geforce 1070 > UHD capable ??? > 00
17 R4 > i7 > GTX 1070 > UHD capable ??? > 99
17 R4 > i7-8750H > 2 GHz > UHD capable ??? > 225.00
17 R4 > i7-7820HK > 120 Hz > GTX1080 > UHD capable ??? > 00

Just motherboards

17 R4 > i7-7820HK > GTX1080 > MBoard LA-D753P > UHD capable ??? > 99
15 RS/17 R4 > i7-7820HK > GTX1080 > LA-D753P > UHD capable ??? > 33
17 R4/15 R3 > i7-7820HK > GTX1080 > LA-D753P > UHD capable ??? > 65
17 R4 > i7-7820HK > GTX1080 > LA-D751P > UHD capable ??? > 00

That’s a list of everything I saw so far, any education on what might and might not work would be greatly appreciated.

Thanks, Maka

ejn63 · Accepted Answer

Before jumping on a new board, note that many software packages generate a unique system checksum when they're installed. If you replace the board, the checksum will change and break the lock between the installation of the software and the system. Unless you can determine with certainty that what you're running isn't activated that way, you will be far better off paying for a repair to existing board than you will be replacing the mainboard.

The checksum that's generated is based on the hardware in the system when the software is installed -- so any replacement board may break the software you seek to preserve.

You may want to try parts-people.com -- they do board level repairs that may solve your problem. Otherwise, recognize that a board replacement may break at least some applications. And also compare the cost of a complete, working used system to just that of a board -- these are old enough that the cost may be similar (or even less expensive).

alexa_005 · Answer

Since your Alienware 17 R4 already has the i7-7820HK and GTX 1070, I'd recommend looking for a replacement motherboard with the same CPU/GPU configuration and matching Dell part number whenever possible. While some 17 R4 boards may physically fit, differences in display support (4K vs. 120 Hz), GPU configuration (GTX 1070 vs. GTX 1080), BIOS compatibility, heatsink layout, and display cable connections can make swaps more complicated than they appear. Before purchasing, I'd also verify that the seller confirms compatibility with the 4K UHD panel and your exact service tag or motherboard part number. It may cost a little more upfront, but matching the original hardware is usually the safest and least troublesome option. Wishing you the best of luck bringing this classic machine back to life!

Matt Ee · Answer

@alexa_005​  Thanks Alexa, I figured if it's not the 'exact' type, there would be problems.  Too bad it is so old, no new motherboards are for sale.  I really appreciate your help!

Matt Ee · Answer

@ejn63​  good deeper insight of things I was not even thinking about!  I never thought to attempt repair it !!!  ill check out the parts people you mentioned to find out if it is a realistic way to go.  Thanks for teaching me other things that effect trying to swap!

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17 R4, motherboard swap options?

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