The Toshiba Satellite M45 Laptop is designed for powerful, portable, multimedia computing. It features a 15.4” WXGA Display running Microsoft Windows XP, with 1.6GHz Processor, 512MB RAM, and 80GB Hard Drive.

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Not booting. Flashing power lights.

I am working on this Toshiba Satellite M45-S165 laptop. I replaced the motherboard about 2 months ago... and it is now returned to me with similiar symptoms. When I press power on, the screen stays black and the power light will flash green (and sometimes stays on) and the fan will run. usually the fan will kick on and run too. I have tried a hard reset by holding power button without anything plagged in, and no luck. Very rarely I can finally get it to boot into windows, but it will usually shut down and go black. Any suggestions? Mother boards are not a cheap thing to replace.

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That is a very good question. I ran into a similar problem with an ASUS laptop and oddly enough removing the hard drive allowed the system to post video. The laptop was brand new so I decided to send it in for warranty service. When I got it back, ASUS declared the problem was the motherboard and had replaced it before sending it back to me. I know that that kind of solution is not a good one for you, but the best steps to take are to remove the hard drive, cd drive, wireless card, and modem card (if applicable) to see if any are preventing the system from being able to operate properly. Each are important to remove as I have experienced situations where they have prevented me from being able to properly use the computer. Finally, if all else fails, remove the RAM from the system and listen for a beep code. If you do not hear any beeps then the motherboard is the likely culprit, else, it could be your CPU (either case is never fun).

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