Solved Dell M6300 will not boot with 150 Watt Power supply-thinks i

February 27, 2015 at 05:48:52
Specs: Windows 7
I have a Dell M6300 that the original 120 watt supply (died) and was replaced with 150 watt power supply. laptop works fine and charges OK after booting (with PS disconnected) but if PS plugged in complains that it cannot boot with 90 W PS. The replacement unit is definitely 150 W.

Once booted the battery stays 100% charged even under heavy workload. Is there any way to bypass the boot check - is there an updated bios.

See More: Dell M6300 will not boot with 150 Watt Power supply-thinks i

Report •

February 27, 2015 at 06:45:41
When booting the system, you should see the message about the adapter not being the correct wattage. F1 will allow to boot into Windows. F3 will prevent the error message from showing. It should state that right on the screen when the system is powered on.

Report •

February 27, 2015 at 06:57:29
Thanks for the fast response.
I may have an older Bios (A11) a later Bios may have changed this - The only message on screen is
" Warning: A 90W power adaptor has been detected. The system can only boot with a 130W power supply or greater. Strike the F1 key to shutdown. "
Another site suggested changing a setting in the advanced options in the bios to ignore adaptor warnings. Unfortunately its not in my Bios options. It may be time to update the Bios.

regards, Gravelg

Report •

February 27, 2015 at 07:38:21
✔ Best Answer
If it is an aftermarket power adapter then it may not be all it says that it is. There are many companies who fake these ratings either by using test results under questionable conditions, fuzzy math, or outright lying. It is reasonably possible that you have what Dell might approve as a 90 watt model (if approved at all) and should probably not be used. Then there is the quality to consider. If the quality is not what they claim, since the wattage is not what they claim, will you do any damage to the laptop using it? I don't know.

You have to be a little bit crazy to keep you from going insane.

Report •

Related Solutions

March 1, 2015 at 06:31:14
Thanks for all the responses.

After several attempts I managed to update the M6300 Bios from A11 to Latest A15. (Note that the M6300 Bios update from Dell does not work under Win7 - apparently a now known issue. The update only works on earlier OS up to Vista. I was able to boot from my old WinXP drive that I had fully replaced during upgrade to 7 pro and upgrade the Bios then reinstall the Win7 Disk. After all that the new Bios still had no way to disable the Power supply warning or any way to ignore it.

It appears that the only answer is to buy another genuine Dell 130 watt power supply and ignore the many 'Aftermarket' 130-150W units that claim to be valid Dell 130w replacements. Or continue to boot on battery alone then plug power back in.

Report •

Ask Question