Server boot failure problem
Use the following procedure when the server fails to boot and there are no video
symptoms.
1. Do the Power Supply LEDs indicate an error?
v Yes - See “Power-supply LEDs” on page 137.
v No - Go to step 2.
2. Do the PCI LED or microprocessor LED indicate an error?
v Yes - Make sure there is a ServeRAID 8k or ServeRAID 8k-l installed in the
server.
v No - Go to step 3.
3. Reseat all system board connectors, cables, memory, and microprocessors.
Retest the server with the following minimum configuration:
v One microprocessor
v Two 512 MB DIMMs
v One power supply
v Power backplane
v Power cord
v ServeRAID SAS adapter
v System board assembly
Did the no boot symptom remain?
v Yes - Go to step 4.
v No - The problem has been corrected.
4. Remove all of the memory DIMMs installed in the server; then, restart sever and
check for the following:
v A memory beep error during POST.
v One or more fans running
Did POST generate a memory beep error and one or more fans are running?
v Yes - Most likely a video problem.
v No- Go to step 5.
5. Clear CMOS; then, retest the server. Did the memory beep error occur?
v Yes - Reinstall the memory DIMMs; then, retest the server.
v No - Go to step 6.
6. Reinstall the memory DIMMs in the server. Did the no boot symptoms remain?
v Yes - Go to step 7.
v No - The problem has been corrected.
7. Call IBM Service with the following information:
v The results you received while performing each step of this procedure
v A complete list of the hardware inventory of your server.
130 IBM System x3500 Type 7977: Problem Determination and Service Guide
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