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Error code A2 - Cannot reset BIOS |
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dani958 
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Joined: 07 Jan 2021 Location: Italy Status: Offline Points: 11 |
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 Topic: Error code A2 - Cannot reset BIOSPosted: 20 Jan 2021 at 12:19am |
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Thanks Xaltar
I already did clear CMOS many times and the RAM sticks are in the right position Module 0: A1 Empty Module 1: A2 DDR4, 8192 MB, 64-bit, 2133 MHz ChannelA-DIMM1 BANK 1 Kingston KHX2133C14D4/8G Module 2: B1 Empty Module 3: B2 DDR4, 8192 MB, 64-bit, 2133 MHz ChannelB-DIMM1 BANK 3 Kingston KHX2133C14D4/8G In the last few days I have tried to turn the PC on, but it's stuck at bios page with A2 code. |
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Intel i5 6600k - EVGA GTX970 SSC - HyperX 2x8GB 2666MHz - ASRock Z170 Pro4 - XFX P1-650G-TS3X
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Xaltar
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Joined: 16 May 2015 Location: Europe Status: Offline Points: 22688 |
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Posted: 14 Jan 2021 at 10:29pm |
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RAM should be installed in slots A2 and B2 for optimum performance with 2 modules.
Try this for clearing CMOS: http://forum.asrock.com/forum_posts.asp?TID=630&title=how-to-clear-cmos-via-battery-removal |
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dani958
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Posted: 14 Jan 2021 at 6:56pm |
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I did run memtest64 and no error found.
Here the log: Module 0: Empty Module 1: DDR4, 8192 MB, 64-bit, 2133 MHz ChannelA-DIMM1 BANK 1 Kingston KHX2133C14D4/8G Module 2: Empty Module 3: DDR4, 8192 MB, 64-bit, 2133 MHz ChannelB-DIMM1 BANK 3 Kingston KHX2133C14D4/8G 0.000: Detecting usable memory (16332 MB theoretical max)... 16.047: 14144 MB Test starting on 4 CPUs... 16.093: Allocating memory... 24.812: Starting loop 1 24.828: Stuck Address Test... 29.156: Random Data Test... 34.453: Move Data Test... 36.593: Bitpattern Test... 144.593: Starting loop 2 144.609: Stuck Address Test... 148.640: Random Data Test... 153.797: Move Data Test... 155.953: Bitpattern Test... 263.843: Starting loop 3 263.859: Stuck Address Test... 268.000: Random Data Test... 279.093: Move Data Test... 281.234: Bitpattern Test... 388.359: Starting loop 4 388.359: Stuck Address Test... 392.390: Random Data Test... 397.531: Move Data Test... 399.672: Bitpattern Test... 506.187: Starting loop 5 506.187: Stuck Address Test... 510.203: Random Data Test... 515.328: Move Data Test... 517.484: Bitpattern Test... 625.125: Starting loop 6 625.140: Stuck Address Test... 629.140: Random Data Test... 634.281: Move Data Test... 636.422: Bitpattern Test... 743.078: Starting loop 7 743.078: Stuck Address Test... 747.093: Random Data Test... 752.265: Move Data Test... 754.406: Bitpattern Test... 862.578: Starting loop 8 862.578: Stuck Address Test... 866.593: Random Data Test... 871.797: Move Data Test... 874.015: Bitpattern Test... ... it looped for another 76 times ... 10005.140: Test finished with no errors detected |
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Intel i5 6600k - EVGA GTX970 SSC - HyperX 2x8GB 2666MHz - ASRock Z170 Pro4 - XFX P1-650G-TS3X
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dani958
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Posted: 12 Jan 2021 at 7:38pm |
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Thanks RLGB, I will try to run Memtest when the pc will boot again, but it won't start now.
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Intel i5 6600k - EVGA GTX970 SSC - HyperX 2x8GB 2666MHz - ASRock Z170 Pro4 - XFX P1-650G-TS3X
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RLGL
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Joined: 29 Jul 2018 Location: MN Status: Offline Points: 1995 |
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Posted: 10 Jan 2021 at 10:01pm |
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When it does boot run Memtest. If the ram is good then I would try a different power supply.
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Asrock Z370 Gaming K6,Intel i7 8700K,
Asrock x570 Taichi |
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dani958
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Posted: 09 Jan 2021 at 9:49pm |
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OGM!
 I turn the pc on, it is stuck at bios (A2 code), after about 1h it magically booted into Windows 10. What can the problem be? |
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Intel i5 6600k - EVGA GTX970 SSC - HyperX 2x8GB 2666MHz - ASRock Z170 Pro4 - XFX P1-650G-TS3X
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dani958
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Posted: 09 Jan 2021 at 7:16pm |
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Today it's same story.
I turn the pc on and stuck at A2 code. CPU is ok. GPU is ok. PSU and RAM are ok otherwise it wouldn't start yesterday, am I right? Maybe the problem is the mobo (ASRock Z170 Pro4)... |
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Intel i5 6600k - EVGA GTX970 SSC - HyperX 2x8GB 2666MHz - ASRock Z170 Pro4 - XFX P1-650G-TS3X
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dani958
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Posted: 08 Jan 2021 at 11:23pm |
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I ran Intel processor Diagnostic Toll and my cpu is ok.
Humidity on the mobo? My GPU has a little damp spot on the top. |
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Intel i5 6600k - EVGA GTX970 SSC - HyperX 2x8GB 2666MHz - ASRock Z170 Pro4 - XFX P1-650G-TS3X
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dani958
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Posted: 08 Jan 2021 at 9:59pm |
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I tried to reinstall CPU & PSU. Stuck at A2.
Then I place all the components and used the hairdryer and now it magically works again. What can the problem be? 
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Intel i5 6600k - EVGA GTX970 SSC - HyperX 2x8GB 2666MHz - ASRock Z170 Pro4 - XFX P1-650G-TS3X
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ASRock_TSD
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Joined: 20 Mar 2015 Status: Offline Points: 8532 |
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Posted: 08 Jan 2021 at 3:23pm |
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Dear Dani958,
Thanks for the reply. There is often a situation where the system starts but does not have the signals of the monitor. One of the causes of this problem is that the system cannot get the RAM to work. If reinstall the PSU and CPU result in the same behavior, we will recommend contacting the store directly to check all of the parts. With thanks, ASRock TSD |
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