- Sep 25, 2013
- 8
- 0
- 10,510
Hi, sorry for errors, I'm from Poland and ain't very knowledgable in technical English, not to mention I wrote this quite fast 
My PC crashes randomly. Either I simply browse the Web or leave the PC for few minutes to do something else and suddenly the cursor becomes stuck and whole system crashes. It also once happened just a second after system load: loading cursor appeared for brief moment an then all system went irresponsive. There is no response from keyboard (even CapsLock etc. diodes won't turn on/off). Whole system crashes to the extent that the power button does not respond instantly (only 4sec. soft power-off works), and when I press the Reset, computer will still be working from 6-7 seconds, then it'll turn off and suddenly start again after 6-7 seconds.
I've checked the system log and there's not a trace of any error, so I presume it's caused by a hardware error. If the crash happens on 12:00, there will be log info about something that happened at 11:45 and next log entry is from 12:02, reporting that the last shutdown was unexpected. I had a plague of events like that about a week ago (Sept 17) and it turned out that the cat jumped up on the PC and made the case bounce so much that one of the DIMMs (2x4GB 1600MHz) became loosened. After that the incidents started to occur. After I fixed that and ensured the RAM modules sit tight, the problem disappeared for few days. However, it reappeared on September 20. I had RAM modules and every other hardware piece checked and they sit firmly in place. I checked the status of RAM both with utility built into the BIOS and Memtest86 - both methods inform me the RAM modules are fine and dandy. The system temperature is more than acceptable as I installed lots of fans (my previous PC nearly died in flames due to the overheat issues). I've updated my BIOS, chipset drivers, used a Microsoft Hotfix for similar problem, updated some other drivers, but it reoccurs. After I removed one of the DIMMs, the PC became more stable, but crashed after a while. The same happened with the second RAM module (in other slot).
My RAM modules have default voltage of 1,65. Sandy Bridge architecture processors don't accept RAM running on 1,65V, but BIOS automatically reduced the voltage to 1,5V. Can this voltage reduction be a reason of PC crashing?
Do I have to buy a dual channel DIMMs with 1600MHz rating and 1.5V voltage? Should I borrow a set of DIMMs like that to check the system stability? Or maybe it's something else? Motherboard (LAN adapter specifically) or power supply problem?
Few things I've noticed:
- it usually occurs while something Internet connection involved happens: Steam is running and downloading something and/or Firefox is on and I start to do something rapidly (e.g. responding to a thread on forum, sending Facebook PM or choosing an option in survey - stuff like that); starting YouTube playback was a method to achieve instant crash;
- after using the OC feature of my motherboard, when RAM was running on the same voltage (1,5V), but at higher rate (about 825Hz / DIMM), the system became a bit more stable - it even allowed YouTube playback - but it finally crashed anyways; after returning to the default setting (800MHz / DIMM) it runs just the same, with YT playback possible; it haven't crashed since, but undoubtedly it will.
SPECS:
Win 7 Home Premium 64bit
Intel Core i5 3.2GHz (2nd gen)
2x4GB Kingston RAM 1600MHz (KHX16C9T3K2/8X)
Asus AMD Radeon HD7790 2GB DCII OC graphic card
P8H77-V LE motherboard
AeroCool Templarius Imperator 750W PSU (Silver)
4 chassis fans, 1 HDD fan, 2 graphic card fans, 1 CPU fan
My PC crashes randomly. Either I simply browse the Web or leave the PC for few minutes to do something else and suddenly the cursor becomes stuck and whole system crashes. It also once happened just a second after system load: loading cursor appeared for brief moment an then all system went irresponsive. There is no response from keyboard (even CapsLock etc. diodes won't turn on/off). Whole system crashes to the extent that the power button does not respond instantly (only 4sec. soft power-off works), and when I press the Reset, computer will still be working from 6-7 seconds, then it'll turn off and suddenly start again after 6-7 seconds.
I've checked the system log and there's not a trace of any error, so I presume it's caused by a hardware error. If the crash happens on 12:00, there will be log info about something that happened at 11:45 and next log entry is from 12:02, reporting that the last shutdown was unexpected. I had a plague of events like that about a week ago (Sept 17) and it turned out that the cat jumped up on the PC and made the case bounce so much that one of the DIMMs (2x4GB 1600MHz) became loosened. After that the incidents started to occur. After I fixed that and ensured the RAM modules sit tight, the problem disappeared for few days. However, it reappeared on September 20. I had RAM modules and every other hardware piece checked and they sit firmly in place. I checked the status of RAM both with utility built into the BIOS and Memtest86 - both methods inform me the RAM modules are fine and dandy. The system temperature is more than acceptable as I installed lots of fans (my previous PC nearly died in flames due to the overheat issues). I've updated my BIOS, chipset drivers, used a Microsoft Hotfix for similar problem, updated some other drivers, but it reoccurs. After I removed one of the DIMMs, the PC became more stable, but crashed after a while. The same happened with the second RAM module (in other slot).
My RAM modules have default voltage of 1,65. Sandy Bridge architecture processors don't accept RAM running on 1,65V, but BIOS automatically reduced the voltage to 1,5V. Can this voltage reduction be a reason of PC crashing?
Do I have to buy a dual channel DIMMs with 1600MHz rating and 1.5V voltage? Should I borrow a set of DIMMs like that to check the system stability? Or maybe it's something else? Motherboard (LAN adapter specifically) or power supply problem?
Few things I've noticed:
- it usually occurs while something Internet connection involved happens: Steam is running and downloading something and/or Firefox is on and I start to do something rapidly (e.g. responding to a thread on forum, sending Facebook PM or choosing an option in survey - stuff like that); starting YouTube playback was a method to achieve instant crash;
- after using the OC feature of my motherboard, when RAM was running on the same voltage (1,5V), but at higher rate (about 825Hz / DIMM), the system became a bit more stable - it even allowed YouTube playback - but it finally crashed anyways; after returning to the default setting (800MHz / DIMM) it runs just the same, with YT playback possible; it haven't crashed since, but undoubtedly it will.
SPECS:
Win 7 Home Premium 64bit
Intel Core i5 3.2GHz (2nd gen)
2x4GB Kingston RAM 1600MHz (KHX16C9T3K2/8X)
Asus AMD Radeon HD7790 2GB DCII OC graphic card
P8H77-V LE motherboard
AeroCool Templarius Imperator 750W PSU (Silver)
4 chassis fans, 1 HDD fan, 2 graphic card fans, 1 CPU fan
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