2 Posts
0
9872
760, MATS Test failure
I changed the battery after getting a low batter warning. I updated BIOS with the date and time. I am unable to get to Windows 10 operating system. I pressed F12 from the Dell screen to run diagnostics. The diagnostics stops when it begins running the MATS test. I tried this twice. It stopped each time at a different CPU address. The computer locked up and pressing ESC to abort wouldn't work so I had to turn it off be holding down the start button. How to I fix?
ArtemisRay
2 Posts
0
September 17th, 2018 19:00
I tested the two memory modules separately, and each passed the pre-boot diagnostic tests. I put reinstalled them to the memory slots and ran the pre-boot diagnostic test again. This time it completed, no Diagnostic Utility Partition identified, and OK to reboot the system. Windows then gave me an "inaccessible boot device" error. I went to Troubleshooting, Advanced Options, Startup Settings, and Safe Mode. From Safe Mode I restarted the computer, and it worked. Problem has been resolved, but don't know why changing a battery would have caused an issue. Also I don't understand how it was resolved.
speedstep
9 Legend
9 Legend
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47K Posts
0
September 17th, 2018 10:00
MATS Test Failure BAD RAM
Extended Memory Test ( 7F090, A0000 )
MATS + Loop 1 ................................. Fail
* Addr : 00100000 ( 1M) , Exp : 55aa55aa , Act : 21802180
The Extended Memory range starts from approximately 641K onwards, this is occupied by the Windows operating system and other software applications. A failure has been encountered at address location :00100000 (memory range at 1M). The MAT-S Test pattern detected the failure by writing a data pattern [55aa55aa] into the memory range location beginning at 641KB through to 32 MB, and the diagnostic detected the failure location at 1 Mb. In this example the read back data was [21802180], which is incorrect.
Tesla1856
8 Wizard
8 Wizard
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17K Posts
0
September 17th, 2018 21:00
There is about 1000 contacts (just pieces of metal touching each other) on those RAM DIMMs. My guess is when you disturbed the motherboard with battery change, a single contact was not a 100% electrical connection any more. By re-seating the DIMMs, you "fixed it". I've seen it many times before.
Many people think soldered-in memory is a conspiracy, but I think preventing this scenario is more likely. However, I still prefer removable DIMMs.
Passmark's MemTest86.com is also good. Memory that completes 2 full passes of that with zero-errors (outside of Windows or Linux ) ... almost impossible for it to still be bad.