Aurora-R7, CPU pump failed, thread 1

I have found this cpu pump failed situation on my new R7 since last week, so far I tried:

1. Uninstall and re-install the Command Center, it works.....until next time I restarted my pc.

2. Run the ePSA test and it passed （the 10 mins one)

3. Re-install the bios and it works for few days until now. (I did not update or change bios recently tho)

Btw, the AlienFX also doesnt work when it shows the cpu pump failed.

Could anyone help me to fix this issue? Or should I need to call the Dell for help since it's still in the 1-yr warranty.