Toshiba Satellite M45-S169 won't boot

Your really pushing the lower minimum requirement limits if you're trying to use Ubuntu 11 or Ubuntu 12. Especially with your on-board graphics chip which borrows system ram.

Try Ubuntu 10.04.4 LTS (Lucid Lynx) instead.

Go Here and download the 1st link on the list under Desktop CD:
http://releases.ubuntu.com/lucid/

OR...

Here is a direct link to the ISO file you need to download and then burn to a CD:
http://releases.ubuntu.com/lucid/ubuntu-10.04.4-desktop-i386.iso

If you don't have Software for burning iso's to CD's then download and install this totally FREE CD Burning program:
http://download.imgburn.com/SetupImgBurn_2.5.7.0.exe

Windows is corrupted or the hard drive has issues, if you have a cd installation disc try a fresh install, if no change! the hardware needs to be checked for possible replacement.

open keyboard then check look bettery there
please click yes for vote

To reset the BIOS read the information from this link.

In case of your laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper.

If it is a bad virus that won't let you do anything on the computer, follow the instructions on this link. If you can install programs on your computer, follow only steps 7 and 8 from the above link.

To reset the BIOS read the information from this link.

In case of your laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper.

Contact Computer manufacturer and they will get you the BIOS default password

Sounds like a bad piece of ram try replacing your ram. Just because you do not get a post boot beep does not mean your ram is good.

Thats a Power On Password...I believe the only way that you can get around/reset/disable it...is by taking out the battery out of the Cmos. I will be looking for more ways other then that but thats one that i know works...
If you would like to attempt it...i dont recommend it for the no computer people...look up fourms and see if others have had the same problem or if people have taken the computer apart and replaced the cmos battery

1. The battery on the motherboard has died. Replace battery.
2. The BIOS is corrupt, reflash BIOS.

Most likely #1, very rarely #2. Pop out the battery on the motherboard and replace it, after the first time you boot up your computer, go into BIOS and set everything the way it should be for your computer (usually just time and date) and then after each sequential time you reboot, that should take care of your problem.

A bit more info would be good. Did it shut down normal. can you enter bois. any messages???