ok, I am having the same problem as a lot of other people with this.
I am running on a Toshiba Satellite (don't have the model) and I've tried the alt/ctrl/del combo, but the options to start task manager never come up for me. I'm not sure what to do now. any other suggestions?
I suggest you try pressing F8 multiple times right after you turn the laptop on. If you can get into the BIOS screen then you have a working computer but a broken Windows OS. Repair instructions vary on what version of Windows you have. If you can't get into the BIOS then you have a failure in the hardware. A 5 or 6 year old laptop is cheaper to replace than to repair.