Thinkpad T400 hardware cannot not reboot

ShowMeTheHarry

Honorable
Apr 5, 2013
2
0
10,510
hi all,

I purchased a used Thinkpad T400 from Newegg but it does not reboot to the Thinkpad logo.
(The power, battery and several other indicator lights are all flashing with blank screen)

However so far it cold boots and shutdown fine....

Do you think the hardware will be more damaged overtime? I have never seen a PC boots but not reboot to the diagnostic screen....
Should I request to replace it because there is only 30days warranty?