15" silver, SN ends: V4RG4 Dual boots to 9.2.2 and 10.4.11
This is a sudden onset situation. Ran fine for about 1.5 yrs. Battery will not charge or hold a charge but OK on AC adapter.
Press start...boots OK - launch screen is "normal", i.e., initial gray screen is solid color rendition, illumination, etc. Gets to blue OS start screen - screen brightness sometimes flutters.
boot finishes, finder (desktop) appears.
desktop for about 10 seconds then display goes to BLACK (yes, I shouted that!) move mouse (no problem here), depress space bar, display relights - screen displays same info as when it went black - illumination is sometimes strong, sometimes w/ bit of flicker.
wait 10 seconds REPEAT, wait 10 seconds REPEAT...and REPEAT... and REPEAT,,,,
during those precious 10 seconds, system accepts mouse and mouse click commands OK
When screen relights, CD drive spins up and immediately shuts down
SAFE start-up works fine - but display & drive have same behaviors
No clue what to attempt next. Not smart enuf to know what to eliminate in a diagnostic effort.
All assistance welcome.