I have a Toshiba Satellite P302D-S8834 - yes, its older, but in great shape. It has never let me use sleep or hibernation mode - it always has issues. The fan comes on when you hit any key or power button and the screen is blank forcing you to do a cold boot. Any ideas on the problem?

SOURCE: Toshiba Satellite Laptop 2405-S201 won't power up

One possibility would be to remove the battery and AC adapter and then just hold down the power button for about 5 seconds.

Put the battery and AC adapter back in and givr it a try.

Hope this helps!

SOURCE: no boot, screen blank after hibernation

Sounds like a memory issue for sure! but I also know that when you put a laptop into hibernation mode it uses about 400MB space for special quick start up access. I think that you may want to try to repair your installation of Windows, you would havw to put your restore disk in and instead of re-installing the OS just repair it...

SOURCE: Labtop Screen Remains Blank

connect to external monitor to rule out bad video card. (remember most laptops have to toggle between internal and external display by using the <FN>+ <F?> key, mine is FN F5.)

If the external works then the problem is

1. Inverter board or
2. TAB welds at LCD or
3. CCFL Cold Cathode Florescent Lamps (backlights)
   

SOURCE: No boot No fan noise no display but lights come on

Somethings has happened to your motherboard, CPU and/or hard drive somewhere along the line if it wont power up when you hit the power button and this would explain the reason for no activity. When a motherboard fails, no activity will happen at all, so Im putting my money on your motherboard being defect so take it in for a service and you may have to buy a new laptop since repairs can be costly.

SOURCE: A fully charged Toshiba Satellite M305D-4831 has a

If you go to control panel + power settings you can configure and adjust how your power gets distributed when in sleep mode etc. This may not totally fix your issue as it will alleviate the loss of power. I would first see what type of life the battery is supposed to have and if you are not satisfied your best bet is to replace the battery with a longer life. Goof luck and please let me know if you need any assistance with that.