Z87 Extreme 4 00 fault

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   Hi,
Apologies if this is covered elsewhere but couldn't spot via search. Following a power cut last night while system was running, PC now refuses to boot. No graphics output by DVI , VGA or separate Graphics card. Fans power up to full speed but board indicator sits at 00. PC attempts its own reboot after about 5 mins but same result. System has been stable with no hardware changes for months. Please don't advise a UPS, it was on one but looks not to have shut down before it lost power (new battery was ordered 3 days ago following APC s/w prompt - that's Fri 13 for you!). Any help gratefully received.
Al

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cdphobe Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Nov 2020 Status: Offline Points: 7	Post Options Post Reply Quote cdphobe Report Post Thanks(0) Quote Reply Topic: Z87 Extreme 4 00 fault Posted: 13 Nov 2020 at 5:12pm
	Hi, Apologies if this is covered elsewhere but couldn't spot via search. Following a power cut last night while system was running, PC now refuses to boot. No graphics output by DVI , VGA or separate Graphics card. Fans power up to full speed but board indicator sits at 00. PC attempts its own reboot after about 5 mins but same result. System has been stable with no hardware changes for months. Please don't advise a UPS, it was on one but looks not to have shut down before it lost power (new battery was ordered 3 days ago following APC s/w prompt - that's Fri 13 for you!). Any help gratefully received. Al

cdphobe Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Nov 2020 Status: Offline Points: 7	Post Options Post Reply Quote cdphobe Report Post Thanks(0) Quote Reply Posted: 13 Nov 2020 at 5:34pm
	Update. Cleared CMOS per manual, no boot at all now, no fans, no bios read out Power going through somewhere as a USB stick briefly lights up when main power switched on. I think its borked.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 22838	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 13 Nov 2020 at 6:19pm
	00 means they system could not detect a CPU, given the circumstances I am inclined to think your PSU died (partially at least). The 00 code will happen if you don't connect the CPU 4/8pin power or if that power is low. I would try a new PSU before writing off the system


cdphobe Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Nov 2020 Status: Offline Points: 7	Post Options Post Reply Quote cdphobe Report Post Thanks(0) Quote Reply Posted: 13 Nov 2020 at 6:44pm
	Thanks for helping @Xaltar. I'm more than happy to try a change to PSU (although its a reasonable Corsair unit) but if it were PSU would that account for lower response (no fans) after a BIOS flash?

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 22838	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 13 Nov 2020 at 7:40pm
	You mean CMOS clear? I didn't see any mention of a BIOS flash. If the PSU is dead/dying then yes, it makes sense that it could be failing more and more each time you try to power it on, leading to less and less activity.


cdphobe Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Nov 2020 Status: Offline Points: 7	Post Options Post Reply Quote cdphobe Report Post Thanks(0) Quote Reply Posted: 13 Nov 2020 at 9:54pm
	Thanks Xaltier, and yes, I meant CMOS clear rather than BIOS. Well, better a PSU than replace Mobo, CPU, RAM and cooler! Will give it a try (and I should have a low tech PSU tester somewhere too. Thanks again for your help

cdphobe Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Nov 2020 Status: Offline Points: 7	Post Options Post Reply Quote cdphobe Report Post Thanks(0) Quote Reply Posted: 17 Nov 2020 at 3:41am
	Update - it lives! Thanks for giving me the confidence to get stuck in Xaltar. PSU was fine but had to go through hangs at A2, A9, A6, 99 and 62, remove all PCIE cards, all drives and replace the CPU Still, got there! Thanks