- May 19, 2011
- 19,052
- 12,262
- 136
PC spec:
Intel Core i3-3225
ASUS P8Z77-M PRO (latest BIOS)
1x 4GB DDR3-1333 module
PSUs I've tried: Corsair CX430M (the normal PSU this PC uses), Seasonic 430ST
I haven't bothered listing everything because the problem occurs even when everything else is disconnected.
I'd say the problem occurs 5 times out of 6 boot-up attempts. The only time it consistently doesn't occur is if I remove the RAM, but I've tried another module and I get the same behaviour. I've switched RAM slots, same behaviour (I'm now preferring the one that the board says one should use in a one-module situation, though before it was in the nearest slot to the CPU). The computer has performed flawlessly for nearly five years and then this comes out of the blue without anything unusual or remarkable happening around the time the problem started (the problem started exhibiting itself as the PC having problems coming out of standby).
I haven't mentioned the PSU either as I've tried another, which hasn't made any difference to the problem.
Very occasionally the computer gets into a loop on switch-on of continually going off and on (on for a second, off for a few), but during testing it's done just a single loop before coming on properly. It seemingly works fine when it's on, but I haven't engaged in any stress testing while it's on (it boots Windows fine).
I've tried loading optimised defaults, the CMOS jumper and finally removing the battery, removing mains, pressing the power switch then leaving it off for several minutes before switching it back on without a battery, still the same behaviour.
I've now tried a graphics card in there (it was using integrated graphics before), still the same symptom.
I have the feeling that this is a faulty board. It just bothers me that the problem doesn't occur without RAM and that I'm used to modern ASUS boards pulling this trick once after being unplugged from the mains, but I can't honestly see how either of those factoids really help me in any way.
Intel Core i3-3225
ASUS P8Z77-M PRO (latest BIOS)
1x 4GB DDR3-1333 module
PSUs I've tried: Corsair CX430M (the normal PSU this PC uses), Seasonic 430ST
I haven't bothered listing everything because the problem occurs even when everything else is disconnected.
I'd say the problem occurs 5 times out of 6 boot-up attempts. The only time it consistently doesn't occur is if I remove the RAM, but I've tried another module and I get the same behaviour. I've switched RAM slots, same behaviour (I'm now preferring the one that the board says one should use in a one-module situation, though before it was in the nearest slot to the CPU). The computer has performed flawlessly for nearly five years and then this comes out of the blue without anything unusual or remarkable happening around the time the problem started (the problem started exhibiting itself as the PC having problems coming out of standby).
I haven't mentioned the PSU either as I've tried another, which hasn't made any difference to the problem.
Very occasionally the computer gets into a loop on switch-on of continually going off and on (on for a second, off for a few), but during testing it's done just a single loop before coming on properly. It seemingly works fine when it's on, but I haven't engaged in any stress testing while it's on (it boots Windows fine).
I've tried loading optimised defaults, the CMOS jumper and finally removing the battery, removing mains, pressing the power switch then leaving it off for several minutes before switching it back on without a battery, still the same behaviour.
I've now tried a graphics card in there (it was using integrated graphics before), still the same symptom.
I have the feeling that this is a faulty board. It just bothers me that the problem doesn't occur without RAM and that I'm used to modern ASUS boards pulling this trick once after being unplugged from the mains, but I can't honestly see how either of those factoids really help me in any way.
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