Define R4 switches causing a boot failure?

Lepardi

Limp Gawd
Joined
Nov 8, 2017
Messages
278
One morning this week my 2014 PC suddenly had difficulties to boot up, and then stopped booting altogether. I stripped down the whole thing and reinsterted everything, tested memories fully with memtest (0 errors), before I got the idea to give the power button a firm press and keep it there for a couple of seconds.

This way it boots up every time. I switched power to the reset button on the mobo, but it also requires the same long firm press. Any ideas?
 

Denpepe

[H]ard|Gawd
Joined
Oct 26, 2015
Messages
1,717
What happens if you use a screwdriver to start the pc iso the buttons? Should be a quick test to see if it is the chassis or the mobo.
 

Lepardi

Limp Gawd
Joined
Nov 8, 2017
Messages
278
What happens if you use a screwdriver to start the pc iso the buttons? Should be a quick test to see if it is the chassis or the mobo.
You mean sticking a screwdriver to the power button jumper makes the PC boot?

Fractal had a cheap 5€ power+reset kit in their spare part shop so I ordered that one. I changed the CMOS battery also, so that's one more thing to eliminate from motherboard's side.
 

Denpepe

[H]ard|Gawd
Joined
Oct 26, 2015
Messages
1,717
You mean sticking a screwdriver to the power button jumper makes the PC boot?

yeah, the power button does just that, connect that jumper for a moment and start the pc, a lot of peole use the screwdrver trick to test their hardware b4 putting it in the case.
 

Lepardi

Limp Gawd
Joined
Nov 8, 2017
Messages
278
Switched in the new one, working perfectly even in a cold boot now.

I just don't really get the real cause behind it. How does a worn out power button boot up the PC, but just leave the fans spinning without signal to monitor?
 
Top