I've been running this board as a media server for the past 3 or so years. A couple months ago the CPU_LED came on with no graphics on the display. I had the configuration modestly overclocked to 4ghz, and resetting bios settings (disconnecting power, removing the battery, moving the clrtc jumper to other pins for 5 seconds) cleared up the issue. I continued on with stock clocks.
Last week I couldn't get the machine to start and found the CPU_LED was on again; I haven't been able to get the CPU_LED off and the machine simply will not POST
What I've tried:
BIOS reset procedure (disconnecting power, removing battery, moving the clrtc jumper to other pins for 5 seconds)
Removing original RAM, placing known good RAM into slot furthest from CPU; along with BIOS reset procedure
Disconnecting every device and cable except 24 pin power and 8 pin 12V with original PSU and known working PSU with known good RAM and with BIOS reset procedure
Removing the CPU from socket and, as mentioned in this thread, following BIOS reset procedure with RAM in slot furthest from CPU
I haven't tried:
switching out the cooler/heatsink (I don't think that would help)
The CPU_LED persists and I can't post. I have placed the CPU in another spare 1155 board (h81m-p33) with the same RAM, PSU, heatsink/cooler being used to test and was able to POST and browse the BIOS; I interpret this to mean the CPU, RAM, PSU, heatsink/cooler are all in working condition.
I haven't noticed any bent pins looking at the socket; this seems unlikely to be the cause as this problem occurred suddenly without my changing hardware at all.
Normally the configuration I run with is:
CPU: i7 2700k
Motherboard: ASUS P8Z68-V PRO/GEN3
RAM: 2x4gb generic g.skill ddr3
PSU: 775w thermaltake PSU
Cooler: xigmatek dark knight
The only conclusion I can draw is that the motherboard is bad. This seems so unlikely that I thought I'd ask you fine people: what else can I try?
Last week I couldn't get the machine to start and found the CPU_LED was on again; I haven't been able to get the CPU_LED off and the machine simply will not POST
What I've tried:
BIOS reset procedure (disconnecting power, removing battery, moving the clrtc jumper to other pins for 5 seconds)
Removing original RAM, placing known good RAM into slot furthest from CPU; along with BIOS reset procedure
Disconnecting every device and cable except 24 pin power and 8 pin 12V with original PSU and known working PSU with known good RAM and with BIOS reset procedure
Removing the CPU from socket and, as mentioned in this thread, following BIOS reset procedure with RAM in slot furthest from CPU
I haven't tried:
switching out the cooler/heatsink (I don't think that would help)
The CPU_LED persists and I can't post. I have placed the CPU in another spare 1155 board (h81m-p33) with the same RAM, PSU, heatsink/cooler being used to test and was able to POST and browse the BIOS; I interpret this to mean the CPU, RAM, PSU, heatsink/cooler are all in working condition.
I haven't noticed any bent pins looking at the socket; this seems unlikely to be the cause as this problem occurred suddenly without my changing hardware at all.
Normally the configuration I run with is:
CPU: i7 2700k
Motherboard: ASUS P8Z68-V PRO/GEN3
RAM: 2x4gb generic g.skill ddr3
PSU: 775w thermaltake PSU
Cooler: xigmatek dark knight
The only conclusion I can draw is that the motherboard is bad. This seems so unlikely that I thought I'd ask you fine people: what else can I try?
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