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#1
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Ping Paul - pre BIOS screen click ?
Having trouble with my ASUS K8V-MX
Computer works fine for hours then suddenly bluescreens. When I reboot, it sometimes works fine, but usually everything starts up (fans, leds etc, I can hear the HD spinning up and the HD led stays on), but there is no "click" and the BIOS screen does not appear. If I wait 20 minutes or so with the power unplugged, it will boot normally. If I leave the power plugged in, it will not. Memtest normal, HD surface scan OK. Temperatures are normal as are the voltages, according to HWMonitor. What is the audible "click" I hear just before the BIOS screen, and which does not happen when it refuses to boot ? I can't locate it. Is it something on the MB or is it a PS "noise" ? I swapped out video cards, nothing changed. TIA []'s PS My wife's Desktop, same MB but a later model is having exactly the same issues ... -- Don't be evil - Google 2004 We have a new policy - Google 2012 |
#2
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Ping Paul - pre BIOS screen click ?
Shadow wrote:
Having trouble with my ASUS K8V-MX Computer works fine for hours then suddenly bluescreens. When I reboot, it sometimes works fine, but usually everything starts up (fans, leds etc, I can hear the HD spinning up and the HD led stays on), but there is no "click" and the BIOS screen does not appear. If I wait 20 minutes or so with the power unplugged, it will boot normally. If I leave the power plugged in, it will not. Memtest normal, HD surface scan OK. Temperatures are normal as are the voltages, according to HWMonitor. What is the audible "click" I hear just before the BIOS screen, and which does not happen when it refuses to boot ? I can't locate it. Is it something on the MB or is it a PS "noise" ? I swapped out video cards, nothing changed. TIA []'s PS My wife's Desktop, same MB but a later model is having exactly the same issues ... You can get "coil noise" on a step current flow change. Also, capacitors can make noise when the dielectric is charged or discharged. But usually it takes a lot to do that. I had a ceramic capacitor being charged to ~120VDC at 1KHz and you could hear a 1KHz tone coming from it. Just barely. The Fujitsu version of that motherboard has a piezo speaker on the motherboard. That could emit a click. I can't find a real strong "bad caps" theme for the board, but of all the things to wear out on a board, power is probably the most likely failure type. Even caps that are visually in good shape, they might not be that good inside. Someone stuck a port card on their failing one, and code stopped at 00, which is probably not the same state yours is getting stuck in. It's not likely your two machines would have correlated failure of ATX power supplies. But the motherboards could have the same component wearing out, whatever it is. The miracle of electronics is it "mostly works". If the components weren't reliable most of the time, we'd never get this **** running. As an example, I had a PCB in the lab, tested and put in a storage case. Three months later, the boss asked to set it up, and it was failing on every test. On a hunch, he had it sent out for continuity testing, and it came back with "300 open circuits". These are copper connections that had broken while the board sat quietly in a wooden shelf. The end result of that little episode, is a local company no longer got to make PCBs for us. We eventually ended up getting PCBs made on the West Coast instead of from shops in town. Imagine if we were still in that era, not being able to make a decent multilayer PCB. Motherboards are pretty low quality... but they don't have that problem. Paul |
#3
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Ping Paul - pre BIOS screen click ?
On Fri, 09 Feb 2018 10:44:08 -0500, Paul
wrote: Shadow wrote: Having trouble with my ASUS K8V-MX Computer works fine for hours then suddenly bluescreens. When I reboot, it sometimes works fine, but usually everything starts up (fans, leds etc, I can hear the HD spinning up and the HD led stays on), but there is no "click" and the BIOS screen does not appear. If I wait 20 minutes or so with the power unplugged, it will boot normally. If I leave the power plugged in, it will not. Memtest normal, HD surface scan OK. Temperatures are normal as are the voltages, according to HWMonitor. What is the audible "click" I hear just before the BIOS screen, and which does not happen when it refuses to boot ? I can't locate it. Is it something on the MB or is it a PS "noise" ? I swapped out video cards, nothing changed. TIA []'s PS My wife's Desktop, same MB but a later model is having exactly the same issues ... You can get "coil noise" on a step current flow change. Also, capacitors can make noise when the dielectric is charged or discharged. But usually it takes a lot to do that. I had a ceramic capacitor being charged to ~120VDC at 1KHz and you could hear a 1KHz tone coming from it. Just barely. The Fujitsu version of that motherboard has a piezo speaker on the motherboard. That could emit a click. I can't find a real strong "bad caps" theme for the board, but of all the things to wear out on a board, power is probably the most likely failure type. Even caps that are visually in good shape, they might not be that good inside. Someone stuck a port card on their failing one, and code stopped at 00, which is probably not the same state yours is getting stuck in. It's not likely your two machines would have correlated failure of ATX power supplies. But the motherboards could have the same component wearing out, whatever it is. The miracle of electronics is it "mostly works". If the components weren't reliable most of the time, we'd never get this **** running. As an example, I had a PCB in the lab, tested and put in a storage case. Three months later, the boss asked to set it up, and it was failing on every test. On a hunch, he had it sent out for continuity testing, and it came back with "300 open circuits". These are copper connections that had broken while the board sat quietly in a wooden shelf. The end result of that little episode, is a local company no longer got to make PCBs for us. We eventually ended up getting PCBs made on the West Coast instead of from shops in town. Imagine if we were still in that era, not being able to make a decent multilayer PCB. Motherboards are pretty low quality... but they don't have that problem. TY I'll do a visual on the capacitors, and unplug my speaker next time I boot and try to locate the click. Not doing it right now, because I'm afraid it won't reboot. Ambient temp is in the 90's (34C ATM), so when I said temperatures are "normal", I meant for Brazil. HWMonitor CPU 42C (oscillating very quickly between 40C to 45C HD 41C (stable) MB SYSTIN 37C (stable) CPUTYN 39C (stable) AUXTIN 66C to 80C (oscillating quickly - no idea if this is relevant). []'s -- Don't be evil - Google 2004 We have a new policy - Google 2012 |
#4
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Ping Paul - pre BIOS screen click ?
Shadow wrote:
I'll do a visual on the capacitors, and unplug my speaker next time I boot and try to locate the click. Not doing it right now, because I'm afraid it won't reboot. Ambient temp is in the 90's (34C ATM), so when I said temperatures are "normal", I meant for Brazil. HWMonitor CPU 42C (oscillating very quickly between 40C to 45C HD 41C (stable) MB SYSTIN 37C (stable) CPUTYN 39C (stable) AUXTIN 66C to 80C (oscillating quickly - no idea if this is relevant). []'s There's always at least one sensor, that isn't connected to anything real. Paul |
#5
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Ping Paul - pre BIOS screen click ?
On Fri, 09 Feb 2018 15:31:06 -0200, Shadow wrote:
Having trouble with my ASUS K8V-MX Computer works fine for hours then suddenly bluescreens. When I reboot, it sometimes works fine, but usually everything starts up (fans, leds etc, I can hear the HD spinning up and the HD led stays on), but there is no "click" and the BIOS screen does not appear. If I wait 20 minutes or so with the power unplugged, it will boot normally. If I leave the power plugged in, it will not. Memtest normal, HD surface scan OK. Temperatures are normal as are the voltages, according to HWMonitor. What is the audible "click" I hear just before the BIOS screen, and which does not happen when it refuses to boot ? I can't locate it. Is it something on the MB or is it a PS "noise" ? I swapped out video cards, nothing changed. My last Asus socket 754 was a K8N-E+. Also ran with an ASUS P4V8X-MX, Intel socket 478. Try, with the power logic, momentary turning it off, from the PS unit's switch, for 10 seconds. Now turn it back on. Does the MB power up, even with the BIOS selection for that (power up upon restoration of power) turned off? Also, when in a stalled condition, without a BIOS POST screen, hold down the front case power button switch steadily for a power off. Does it take a long time, having to hold in the button several seconds before it shuts off? Will it post normally upon another button press to turn on the computer? The P4V8X-MX I can't recall major issues;- it probably was fine until I decided to upgrade to newer models processor models among multicores. With the K8N-E+, however, I recall putting in three or four PS replacement units. Seems it worked fine (for around five years), whereupon oncoming flakiness only worsened. Your MB is going on, between 10 or more years, since its production date. You should be patting yourself so hard on the back, you might be danger of dislocating a shoulder ligaments. That particular ASUS AMD MB is notably why I switched, off of ASUS, to Gigabyte. The two Gigabyte models I subsequently owned continued to operate with surprising regularity and integrity. One is still in service, this one (it says HI!) -- four times upgraded and presently maxed-out with Intels I've bought used from Ebay -- while the other, an AMD Gigabyte model, (also upgrade four times with pulled processors from Ebay), is functionally perfect (albeit on a shelf near mostly-open windows...hmmm). I replaced the last-mentioned AMD with another Gigabyte (AMD model) for updating to the next generation MPUs, populated with my octal-core Bulldozer, at the insemination of the Ryzen releases. As I said, I did have some notable luck with my K8N-E+, to keep it hobbling along, after sorts, with PS replacements. In fact, convinced the MB was a notorious "Power Supply Eater", virtually everyone confounded told me, then, that could never be: MBs do not exist as Eaters of Power Supplies, because, such as they are, electronically, that can never be other than a logical impossibility. As I still remain, begging to differ, & et cetera -F |
#6
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Ping Paul - pre BIOS screen click ?
On Fri, 09 Feb 2018 14:16:32 -0500, Paul
wrote: Shadow wrote: I'll do a visual on the capacitors, and unplug my speaker next time I boot and try to locate the click. Not doing it right now, because I'm afraid it won't reboot. Ambient temp is in the 90's (34C ATM), so when I said temperatures are "normal", I meant for Brazil. HWMonitor CPU 42C (oscillating very quickly between 40C to 45C HD 41C (stable) MB SYSTIN 37C (stable) CPUTYN 39C (stable) AUXTIN 66C to 80C (oscillating quickly - no idea if this is relevant). []'s There's always at least one sensor, that isn't connected to anything real. What I thought. Capacitors appear OK, The click does not come from the speaker (I disconnected it), and does not happen unless I shut down (click) or boot from zero (click). A reboot brings up the BIOS screen with no audible click. Still can't locate it. I'd need to stick my head in to get some sort of binaural geolocation. And it won't fit. I use a Corsair PS, which are usually reliable ... []'s -- Don't be evil - Google 2004 We have a new policy - Google 2012 |
#7
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Ping Paul - pre BIOS screen click ?
On Fri, 09 Feb 2018 18:25:44 -0500, Flasherly
wrote: On Fri, 09 Feb 2018 15:31:06 -0200, Shadow wrote: Having trouble with my ASUS K8V-MX Computer works fine for hours then suddenly bluescreens. When I reboot, it sometimes works fine, but usually everything starts up (fans, leds etc, I can hear the HD spinning up and the HD led stays on), but there is no "click" and the BIOS screen does not appear. If I wait 20 minutes or so with the power unplugged, it will boot normally. If I leave the power plugged in, it will not. Memtest normal, HD surface scan OK. Temperatures are normal as are the voltages, according to HWMonitor. What is the audible "click" I hear just before the BIOS screen, and which does not happen when it refuses to boot ? I can't locate it. Is it something on the MB or is it a PS "noise" ? I swapped out video cards, nothing changed. My last Asus socket 754 was a K8N-E+. Also ran with an ASUS P4V8X-MX, Intel socket 478. Mine's an AMD Try, with the power logic, momentary turning it off, from the PS unit's switch, for 10 seconds. Now turn it back on. Does the MB power up, even with the BIOS selection for that (power up upon restoration of power) turned off? Don't think I have that option. I'll look. Also, when in a stalled condition, without a BIOS POST screen, hold down the front case power button switch steadily for a power off. Does it take a long time, having to hold in the button several seconds before it shuts off? Will it post normally upon another button press to turn on the computer? The PS will NOT turn off when it's stalled, no matter how long I press the button. HD led etc remain on. The P4V8X-MX I can't recall major issues;- it probably was fine until I decided to upgrade to newer models processor models among multicores. With the K8N-E+, however, I recall putting in three or four PS replacement units. Seems it worked fine (for around five years), whereupon oncoming flakiness only worsened. Your MB is going on, between 10 or more years, since its production date. You should be patting yourself so hard on the back, you might be danger of dislocating a shoulder ligaments. My MB is only 13 years old. My ASUS TX still works fine ... and I built that PC 20 years ago. But you might be right. Nothing is built to last these days .... That particular ASUS AMD MB is notably why I switched, off of ASUS, to Gigabyte. The two Gigabyte models I subsequently owned continued to operate with surprising regularity and integrity. One is still in service, this one (it says HI!) -- four times upgraded and presently maxed-out with Intels I've bought used from Ebay -- while the other, an AMD Gigabyte model, (also upgrade four times with pulled processors from Ebay), is functionally perfect (albeit on a shelf near mostly-open windows...hmmm). I replaced the last-mentioned AMD with another Gigabyte (AMD model) for updating to the next generation MPUs, populated with my octal-core Bulldozer, at the insemination of the Ryzen releases. It's sometimes luck. I've been lucky with ASUS so far ..... I had a Soyo that ****ed the contents of the capacitors all over the MB a year after I bought it. As I said, I did have some notable luck with my K8N-E+, to keep it hobbling along, after sorts, with PS replacements. In fact, convinced the MB was a notorious "Power Supply Eater", virtually everyone confounded told me, then, that could never be: MBs do not exist as Eaters of Power Supplies, because, such as they are, electronically, that can never be other than a logical impossibility. It could be the PS. It always switches off fine under Linux, but under XP it sometimes hangs after the screen goes dark, and I have to turn it off at the mains. About once every 4 - 5 shutdowns. I tested the voltages, and they are all OK, but intermittent problems are sht to investigate. []'s -- Don't be evil - Google 2004 We have a new policy - Google 2012 |
#8
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Ping Paul - pre BIOS screen click ?
On Fri, 09 Feb 2018 23:55:54 -0200, Shadow wrote:
The PS will NOT turn off when it's stalled, no matter how long I press the button. HD led etc remain on. OK. I've run into oddball power issues, where holding in the case button will power it down, although it takes an inordinate time. If yours remains locked up, that's something else. Presumably the reset is also locked out from whatever else is going on. Lower everything feasible in the BIOS: Your CPU speed, notably, to something workable under its default. And watch for a PS unit if you don't have a spare. I like having a known fresh unit around. I "feel better" with an extra, than the alternative...poking around with a multimeter when without one. My MB is only 13 years old. My ASUS TX still works fine ... and I built that PC 20 years ago. But you might be right. Nothing is built to last these days You're an anomaly, even for 13 years. Most MB are doing well enough, decently expected, to reach five years;- beyond and ten, that's pushing it. IMO. My last Asus socket 754, the K8N-E+ I mentioned, (I bought the ASUS Intel MB model about the same time), was incidentally a returned product. Probably in the same ASUS family of products, as yours, although a "Deluxe model". I did however get at least three to five good years off it, anyway;- probably ditched it shortly after that. It's sometimes luck. I've been lucky with ASUS so far ..... I had a Soyo that ****ed the contents of the capacitors all over the MB a year after I bought it. Nasty, that they actually leaked out of the Soyo. I ran with quite a few MSI boards, probably AMD K6 sockets, which I liked, before going with the two ASUS models (that was my first Intel, a Duron, since a 386SX). There's really no reason not to go with solid-state capacitors, at least "promoted" among all the serious MB makes, these days. It could be the PS. It always switches off fine under Linux, but under XP it sometimes hangs after the screen goes dark, and I have to turn it off at the mains. About once every 4 - 5 shutdowns. I tested the voltages, and they are all OK, but intermittent problems are sht to investigate. Intermittency is certainly no stranger to computers. More severe a degree for some, less for others, but an eventuality over a matter of time for all. Always a spectre of horrors haunting unpreparedness, an extent of inconvenience potentially to kludging together a solution for apparent inconsistencies;- A "computer law", otherwise to budget wisely for catastrophic preparation at the next nearest phase;- Least to nothing spent, being for the most amount of pleasure/efficiency derived, for some, I as personally count the mark of experience. |
#9
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Ping Paul - pre BIOS screen click ?
On Fri, 09 Feb 2018 23:40:09 -0200, Shadow wrote:
Still can't locate it. I'd need to stick my head in to get some sort of binaural geolocation. And it won't fit. A long screwdriver, stick, or something to conduct sound. Put the other end directly behind the ear, at the bone closest the ear flap, place variously and listen for pitches and volume. I've a mechanic's stethoscope. |
#10
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Ping Paul - pre BIOS screen click ?
On Sat, 10 Feb 2018 12:21:17 -0500, Flasherly
wrote: On Fri, 09 Feb 2018 23:40:09 -0200, Shadow wrote: Still can't locate it. I'd need to stick my head in to get some sort of binaural geolocation. And it won't fit. A long screwdriver, stick, or something to conduct sound. Put the other end directly behind the ear, at the bone closest the ear flap, place variously and listen for pitches and volume. I've a mechanic's stethoscope. Been there, done that. Listening to the tappets on my V8. But that was almost 50 decades ago. I'll give it a go. Wooden screwdriver, or I'll do myself a ECT. []'s -- Don't be evil - Google 2004 We have a new policy - Google 2012 |
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