Computer just shows scrolling banner will not do anything else

http://www.precor.com/products/media/english/Treadmill_932i_Manual_Maintenance_Reference_Assembly_English.pdf

Replacement Parts for Fitness Exercise Equipment at SPORTSMITH

Precor Error 03, Memory, RAM, EEPROM Test Error Probable Cause This error message almost always indicates an upper PCA problem when it is consistently displayed. Failures causing this error message to be displayed are rare.
Corrective Action If the error message is consistently displayed when the unit is powered up, the upper PCA should be replaced. It is possible to see this message displayed intermittently due to external causes. If the units A.C. input significantly dips during the power up test sequence the test could fail resulting in this message being displayed. Treadmills operating on non-dedicated A.C. circuits may see this message displayed on an intermittent basis.

Precor Error Code 03 E03 EEPROM Test Error

Pause will stop display in a DOS or BIOS window. Whilst the machine is booting up, you can depress the pause key and he display will stop scrolling. Return or Enter will permit the display to continue scrolling.

You can also use Pause in conjunction with the Windows key (within Windows) to discover system properties.

The Break key will interrupt execution of some command files or reload the command processor.

When start-up prompt "PRESS ENTER TO BEGIN OR PRESS QUICK
START" appears, access the Club Program by sequentially pressing
STOP, SPEED , SPEED , SPEED , RESET, SPEED , SPEED , and
SPEED . (Numbers on the display appear in sequence: 4, 5, 6, 5, 1, 5, 6,
and 5.)
Note: You must sequentially press each key within 4 seconds of each other
or the display reverts back to the start-up prompt.
6. Maximum Speed: Use any or key to designate a speed limit between
1 and 15 mph (1 and 24 kph). The speed you designate limits the speed of
the treadmill. Press ENTER when the desired speed appears.
7. Maximum Workout Time: Use any or key to designate a time limit
between 10 and 240 minutes. The amount of time you choose limits the
length of a person's workout. (This does not include the automatic 5-minute
cool-down period.) Press ENTER to accept the time limit.
Note: Continuous pressure on the arrow key lets you scroll through the
numbers being displayed.
8. Language: Use any or key if you want to change the language. You can
choose between English, German, Spanish, or French. When you change
the language, you affect all the prompts and informational messages that
appear on the display. Select the language being displayed by pressing
ENTER.
9. Custom Courses (C964i only): The course profile appears in the center
display. (If you want to customize course number 2, press ENTER.)
When you enter custom mode, you have the ability to "draw over" an existing
God bless you

Diagnostics is entered by holding the 'PAUSE' key when power is applied or by holding the
'PAUSE' key and pressing the 'CLEAR' key twice from any state.
The unit will take approx. 3 to 4 seconds to enter Diagnostics.
On entry to this state, the message:

USE ARROW KEY TO SCROLL THROUGH LIST till show on ddisplay the option "MAINTENANCE"

USE ARROW KEY TO SCROLL THROUGH LIST when display show the message "replace wax bag" press enter
the display show "repair logged" and exit press the key "clear"

Contact manufacturer/vendor Precord for assistance:

https://www.precor.com/en-us/contact-us/customer-service

IMPORTANT The printer must be printing the Phase pattern of “H’s” when the Phasing Value is changed, or the New Phasing Value will not be written into NVRAM. If the value is changed when not printing, the printer will return to its default phasing
value when powered off then back on.
1. Install the ribbon.
2. Load full width (136 column) paper.
3. Power on the printer and set top of form.
4. Press Stop to put the printer into NOT READY mode.
5. Press Scroll ↑ + Scroll ↓ to unlock the Enter key.
6. Press Scroll ↑ + Scroll ↓ + Return + Enter to enter the CE Tests menu. (Press all four keys at the same time.)
7. The display will show “SERVICE / PRINTER MECHANISM TESTS”, the first menu item. Press Enter to enter the
mechanism tests menu.
8. Press Scroll↑ or Scroll↓ until
“PRINTER MECHANISM TESTS / HAMMER PHASING” is on the display.
9. Press Enter. The printer begins printing all H’s, each line preceded by the phasing index number.
10. Press Return. The display will show
“SERVICE / PRINTER MECHANISM TESTS”.
11. Press Scroll ↑ or Scroll ↓ until “SERVICE / HAMMER PHASE VALUE” is on the display.
12. Press Enter. The top line of the display will show
“HAMMER PHASE VALUE” and the bottom line will show the current phasing index number.
13. Press Enter. The phasing index (followed by an asterisk) will move up to the top line of the display.
14. Press Scroll ↑ or Scroll ↓ to increase or decrease the phasing index, then press Enter to activate the value as it prints.
Continue to increase or decrease the phasing index until the pattern of H’s appears.

15. When the print pattern is acceptable, press Stop. Printing stops, and the printer automatically enters the current phase
index value into NVRAM. The display shows “NOT READY”.
16. Press Scroll ↑ + Scroll ↓ to lock the Enter key.
17. Close the printer cover. Press Start to put the printer into READY mode.
NOTE: If you changed the phasing value, power down the printer, remove the shuttle cover, and write the new phase value on
the aluminum shuttle casting.

Press "Play/Pause" button for at least 1 second. Select display item by pushing Control knob "left" or "right" to show scrolling display or clock display. Hope this helps.

This link is where I would start. Replaced Crank Arm on Precor EFX 546 and Display Doesn Work