Hi @HoNa welcome to this free user to user Alienware laptop discussion forum. This is not Dell Support. 

Unable to find Product Support for your Alienware 15 R5, is it Alienware 15 (R1) ? 

nope, my bad

its alienware 17 r5, you can see it in this link

https://www.dell.com/support/home/en-uk/product-support/product/alienware-17-r5/overview

HoNa,

The private Service Tag that you provided to DELL-Cares is for an Optiplex 3020? You need to boot into the BIOS and verify the 17 R5 Service Tag and cross check that with the label. Then send it to the DELL-Cares agents via their private message.

You also need to explain what this means, "I just change my Windows 10". Change it from what? Explain in detail.

ty for answering me

how i have boot into bios?

i had Windows 10 and when I ran into problems I reinstalled Windows 10 , that problem is my usb ports, they does not work and They are healthy in terms of hardware, i also installed latest version of bios from dell site, and it does not repair and now i can not use alienware command center too i do not know what i most to do, this the error when i connect something in usb, (usb device not recognized) in device manager see 5 unknown usb device (port reset failed) in them properties written (Windows has stopped this device because it has reported problems. (Code 43)) and (A USB port reset request failed.) 

about Service Tag i said what is written in the down of my laptop

help me pls

Hi @HoNa  thank you for sharing update. 

Please click on Product Support and allow Dell to automatically identify your Model and Revision number (e.g. Alienware 17 R5). Do not share your private System Service Tag and/or Express Service Code in this public forum. 

(1) During boot, at Alienware splash screen, press and hold down F12 key to open boot menu. Using up and down keys select Diagnostics option and press enter key. 

(2) Alternatively, if Alienware 17 R5, click on its Diagnostics and run 40 minutes Full Test to thoroughly analyse your PC and detect hardware problems. 

Please note Alienware 17 R5 operating system drivers are for Windows 10, 64-bit. 

Thank you for training, but no problem solved and no problem was find during the Diagnostics, also i downloaded driver from dell support.

About this ( Please click on Product Support and allow Dell to automatically identify your Model and Revision number) i doesn't understand what u want me to do

Hi @HoNa  there is a different way to access support customized for your product by visiting Dell webpage for your generic system overview, click on Enter Service Tag, then in next window, click on link to Detect your PC. 

The online 17 R5 Service Manual explains the BIOS System setup on page 133.

* Plug the external AC power adapter into the 17 R5
* Restart the 17 R5
* Press F2 when the Dell logo is displayed to enter the BIOS setup program
* The main screen should show the private Service Tag

Its doesn't detect my system and show me another system

Nothing solved help pls i like my laptop lamp and i dont know what i must to do with usb ports i need help so bad

Hi @HoNa thank you for sharing that Detect your PC shows a different system. The motherboard determines the system and not its external appearance or labels.

Your private BIOS Service Tag says your system is Mini Tower OptiPlex 3020.

Would it be possible to remove cover, take photograph of motherboard + connections and share image? Thank you. 

Sorry for the late

In fact i dont know how do that and I don't know some one to trust him i just can give u some pictures that what i can open it and i cant go deeper 

I could install Alienware command center but its give me error and its just have two tab I can't turn on laptop lights and keyboard light and also laptop usb has that's problem and doesn't fix