Pc-Check® UEFI

Test Result

Memory Pseudo Random Data Failure Information

Test Group 1002

Device Memory

This is a group that tests physical memory (RAM).

Different testing algorithms are used by which to reveal the faulty behaviour of prone memory modules. Memory testing is a probabilistic process that seeks to discover problems that could lead to data or program corruption in normal operation. The number of possible combinations of data and timing are near infinite, so most test algorithms seek to isolate problems though proven methods and careful design based on the physical characteristics of the manufacturing design - for example physically adjacent bit cells are more likely to show coupling effects.

Note: If testing with a duration, for all tests this should be at least a minute.

Note: In this test group it is possible to combine the duration and coverage parameters. i.e. you can test 50% of memory for 60 minutes.

Note: Identify the failing module by matching the 'handle' value of the device in the system information log with the value given in the test failure code of the result log.

Test Number 403

Test Name Pseudo Random Data

Writes pseudo-random patterns into memory and verifies that they were stored correctly.

Estimated test time Approx 1s per GB

Parameter 1 Duration

How long to run the test in seconds or specify zero if testing by coverage alone (default).

Parameter 2 Coverage

Percentage of available memory to test. 

Parameter 3 Pseudo Random Seed

Seed used for initialising the Pseudo random number generator. 

Parameter 5 Use bootstrap processor only

Test only with the bootstrap CPU thread.

ERRORCODES & TROUBLESHOOTING

Mismatch of memory value. CODE="0x00/3FF"
TROUBLESHOOTING0: The memory appears to be faulty. Try re-seating or swapping out modules.

Memory allocation failure. CODE="0x01/3FF"
TROUBLESHOOTING1: There was an internal error. The test was inconclusive. Check for BIOS updates.

The application processor timed out. CODE="0x02/3FF"
TROUBLESHOOTING1: There was an internal error. The test was inconclusive. Check for BIOS updates.

Core synchronisation failed. CODE="0x03/3FF"
TROUBLESHOOTING1: There was an internal error. The test was inconclusive. Check for BIOS updates.

Memory marked unusable by BIOS. CODE="0x04/3FF"
TROUBLESHOOTING0: The memory appears to be faulty. Try re-seating or swapping out modules.

1 or more application processors failed to start. CODE="0x05/3FF"
TROUBLESHOOTING1: There was an internal error. The test was inconclusive. Check for BIOS updates.

Unexpected algorithmic failure, parasitic memory corruption? CODE="0x06/3FF"
TROUBLESHOOTING0: The memory appears to be faulty. Try re-seating or swapping out modules.