high performance mode not working properly and no alienfx for dell g5 15 5511

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Alright, here is the solution:
- Do not restore your system or reinstall Win!
- Make sure Intel Speed Step is disabled in BIOS.
- You need modify the Modern sleep registry by typing this commande in CMD or powershell and restart:

reg add HKLM\System\CurrentControlSet\Control\Power /v PlatformAoAcOverride /t REG_DWORD /d 0

- Then add the missing power plans by typing these commandes in CMD or powershell:
   Restore Power saver power plan:
powercfg -duplicatescheme a1841308-3541-4fab-bc81-f71556f20b4a
   Restore Balanced power plan:
powercfg -duplicatescheme 381b4222-f694-41f0-9685-ff5bb260df2e
   Restore High Performance power plan:
powercfg -duplicatescheme 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c
   Restore Ultimate Performance power plan:
powercfg -duplicatescheme e9a42b02-d5df-448d-aa00-03f14749eb61

That's it.

same problem. I lost F1 working as high performance mode and Alienware command centers settings are lost and changed for balanced or performance battery modes speeds and overclocking after the last update. I need URGENT HELP as Im finishing projects- please get in touch

I'm not sure if you ever found the fix. However in the last update I lost the enhanced gaming mode when pushing g it said off and would not come back on ever Nvidia just today has an update I just ran it, installed it and it is now back when I push g high performance mode is activated. Hope this helps anybody who reads this