PC not booting at all

Clarifications

It could be a heat problem.
>> Check ALL of your fans to make sure they are working.
How much memory do you have? If 512mb of memory then update (if possible) to 2GB.

Harddrive might be corrupted, so get another hdd and have the new drive as MASTER and the OLD drive as SLAVE, load on your Windows software on the NEW drive plus all of the updates etc, etc. Then you can then access your old drive through the "My computer" Icon.

Please post back if you have any more problems or questions.
If this information is useful, please mark as helpful. Thanks.

Open the BIOS and check that the Date & Time are correct and change the Boot Order to Floppy if you have one then Optical and finally HDD. Remember to save the changes when you exit BIOS and then when the POST Screen appears press & Hold down the [b]F8 Key[/b] then when you get the White On Black Screen using the arrow keys scroll up to [b]Safe Mode[/b] and press Enter.

Watch the list of drivers being loaded and if the system restarts now make a note of the Last Driver that was loaded and post back here with the details.

Col

Give us more details on your system like age, brand, specs so we can help you more.

My friend had a Dell Inspiron laptop (1100 series I think) that did that same thing. There was some kind of issue with where the power adapter plugged into the mobo. Had to replace that mobo.

I also did a side job for a lady who had the same thing going on, but that time I was able to boot from a Live CD into a Linux distro. Her problem was the NTFS table had been corrupted. I booted a Windows installation disk, went to the recovery console, and ran fixmbr. Voila!! It worked.