Optional-Device Problems - Lenovo ThinkSystem ST50 V2 Maintenance Manual

c. Video adapter (if one is installed)
d. (Trained technician only) System board
Screen goes blank when you start some application programs
Complete the following steps until the problem is solved.
1. Make sure that:
• The application program is not set in a display mode with resolution that is higher than the capability
of the monitor (1920 x 1080).
• The necessary device drivers for the application are all installed.
The monitor has screen jitter, or the screen image is wavy, unreadable, rolling, or distorted.
Complete the following steps until the problem is solved.
1. If the monitor self-tests show that the monitor is working correctly, examine the location of the monitor.
Magnetic fields around other devices (such as transformers, appliances, fluorescent, and other monitors)
can cause screen jitter or wavy, unreadable, rolling, or distorted screen images. If this happens, turn off
the monitor.
Attention: Moving a color monitor while it is turned on might cause screen discoloration.
Move the device and the monitor at least 305 mm (12 inches) apart, and turn on the monitor.
Notes:
a. To prevent diskette drive read/write errors, make sure that the distance between the monitor and any
external diskette drive is at least 76 mm (3 inches).
b. Non-Lenovo monitor cables might cause unpredictable problems.
2. Disconnect and reconnect the monitor cable.
3. Replace the following components one at a time, in the order shown, restarting the server each time:
a. Monitor cable
b. Monitor
c. Video adapter (if one is installed)
d. (Trained technician only) System board

Optional-device problems

Follow this procedure to solve problems related to optional devices.
• "PCIe adapter is not recognized or is not functioning" on page 168
• "A Lenovo optional device that worked previously does not work now. " on page 169
• "A Lenovo optional device that was just installed does not work." on page 169
• "A Lenovo optional device that worked previously does not work now. " on page 169
PCIe adapter is not recognized or is not functioning
Complete the following steps until the problem is solved.
1. Check the system event log and resolve any related problems. To view the system event log, go to
Setup Utility and select Security ➙ System Event Log ➙ View System Event Log.
2. Make sure that:
• The device is supported by the server (see
• The latest version of corresponding driver is installed.
ThinkSystem ST50 V2 Maintenance Manual
168
https://static.lenovo.com/us/en/serverproven/index.shtml
).