Computer will not turn on

There's nothing wrong with the T-com board. It's most likely a weak capacitor on the power broad supplying the back lighting. Get 3 9v batteries for you have 27v disconnect the back lighting for the power broad and test each LED strip, to find the bad LED bulb. Change the bulb or bypass it. ( be careful not to crack the screen).

try pulling power plug out of monitor for 20 seconds and put it back in and turn on p.c. .

Happens occasionally to me but can't give reason why this fixes it but it seems to fix it not detecting computer video signal .

If it doesn't turn off by holding the power button down for 10 seconds, then it cannot be turned off by the power button alone, like most modern lcd monitors. Most modern monitors goes into standby mode. To completely cut power, you must unplug the power cable.
I've enclosed a link to the install manual for reference.
Samsung SyncMaster P2050 User Manual Page 7

I have the GX Gaming speakers and occasionally the power will not come on when turning the knob. Unplugging the power cord for 30 seconds or so fixes the problem. Only unplugging for 10 seconds is not sufficient.

Check you brake fluid, If its low when you go WOT the fluid will move away from the sensor and the light with come on and take a few seconds to reset

try to update the monitor driver tehn check the same with the cables from cpu detached if no signal comes for long then the monitor is fine also try to check the monitor on bios screen

When I try to turn it on it comes up with the “rino” initialization screen and buzzes/vibrates at 5 second intervals. It never goes past this screen. Occasionally, for about 1 second a small white bar will appear across the bottom saying “0%. I’ve recharged the Li battery and got the same result. I’ve tried it while connected to the charger. Same result. I’ve tried using the optional 4 AA battery pack with fresh alkaline batteries. Same result. Did the factory reboot (page/enter/power buttons). Same – except instead of a buzz/vibrate I get the tone every 5 seconds. Have to remove battery to turn off.

Contacted Garmin tech support today (10/22) - hope to hear from them soon.

The inverter inside the lcd panel is most likely your problem. Try removing the whole lcd screen from the laptop if you are capable and run it with the external screen to confirm. leave the lcd switch off (this lcd switch above the power button turns the lcd inverter on and off)

abs computer sounds no good,check for short in wire to oil sender wire might be grounding out to turn light on