Monitor Restarts Itself Randomly HELP

[solive]

Hey, first of all thanks for your help! My monitor model: ASUS VG259QM
My Problem: While playing games or watching Twitch, monitor restarts itself as i see ASUS logo after restart. I did sent monitor to asus and they said there's not problem as they did prolonged tests. But when i'm using it, playing CS:GO or Valorant i see random restarts and it's worst thing can happen while playing an competetive match. I used voltage regulator and did not see any issues. I used my TV as monitor, nothing like that happened @4k 60hz with HDMI cable. I'm using VG259QM @ 280hz OD: 80 with a display port cable.
My PC Specs:
OS: Windows 10 Display Card: RTX 2070S Ram: 32GB Proccesor: Intel i7 9700K Motherboard: Msi Z370m Mortar

[Vector0102]

27 minutes ago, solive said:

Hey, first of all thanks for your help! My monitor model: ASUS VG259QM
My Problem: While playing games or watching Twitch, monitor restarts itself as i see ASUS logo after restart. I did sent monitor to asus and they said there's not problem as they did prolonged tests. But when i'm using it, playing CS:GO or Valorant i see random restarts and it's worst thing can happen while playing an competetive match. I used voltage regulator and did not see any issues. I used my TV as monitor, nothing like that happened @4k 60hz with HDMI cable. I'm using VG259QM @ 280hz OD: 80 with a display port cable.
My PC Specs:
OS: Windows 10 Display Card: RTX 2070S Ram: 32GB Proccesor: Intel i7 9700K Motherboard: Msi Z370m Mortar

must be faulty/loose power cable. did you try another cable? did you try another socket for the monitor?

[solive]

1 minute ago, Vector0102 said:

must be faulty/loose power cable. did you try another cable? did you try another socket for the monitor?

Hey thanks for answer, i did not try any other power cable as it has a power block but i sent to ASUS they sould've tried it right? I did not try any other socket as it has only one Display port. Should i use HDMI? but i want to use it @280hz. 

[solive]

Tried HDMI Cable, i think works fine. So do DisplayPort cable restarts monitor?

[solive]

Little update: Witch HDMI cable, i restarted itself again only once in 3 hours. I really don't know the cause of it. Any help?